CBSE > Class 10 > Science | CBSE Board | Homework Help

EMI means electromagnetic induction. It is the phenomenon of producing electric current in a conductor by changing the magnetic field through the conductor

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Mango Athøī Heartfilia 5 years, 2 months ago

Electro magnetic induction

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Shrisham Tiwari 5 years, 2 months ago

Equated monthly Installment paid by the customer towards repayment of loan amount over the loan period.

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ANSWER

Write a note on nephrons

Posted by Suhana Pulyani 5 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Yogita Ingle 5 years, 2 months ago

Structure of a Nephrons:

Nephrons are the basic filtering units of kidneys.
Each kidney possesses large number of nephrons, approximately 1-1.5 million.
The main components of the nephron are glomerulus, Bowman’s capsule, and a long renal tubule.

Functioning of a Nephron:

The blood enters the kidney through the renal artery, which branches into many capillaries associated with glomerulus.
The water and solute are transferred to the nephron at Bowman’s capsule.
In the proximal tubule, some substances such as amino acids, glucose, and salts are selectively reabsorbed and unwanted molecules are added in the urine.
The filtrate then moves down into the loop of Henle, where more water is absorbed.
From here, the filtrate moves upwards into the distal tubule and finally to the collecting duct. Collecting duct collects urine from many nephrons.
The urine formed in each kidney enters a long tube called ureter. From ureter, it gets transported to the urinary bladder and then into the urethra.

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Shrisham Tiwari 5 years, 2 months ago

A nephron is the basic unit of structure in the kidney . A nephron is used separate to water, ions and small molecules from the blood, filter out wastes and toxins, and return needed molecules to the blood.

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Gopal Kumar 5 years, 2 months ago

Hxh gjchc icscudufchchciccivighogogixskxxihhchcjf UF ufi

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ANSWER

An electric bulb is rated 220v and 100w.when it is operated on 110v.the power consumed will be?

Posted by Ahmed Mihad 5 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Yogita Ingle 5 years, 2 months ago

The power consumption of an Electric bulb which is rated 220V & 100W is given by the following relation:

Where 'P' is the power rating, 'V' is the voltage at which the bulb functions and 'R' is the resistance provided

by that bulb to the flow of current across the circuit.

-Therefore, the resistance 'R' due to the bulb is 484 Ohm

-Now when the same bulb is used across the voltage of 110 V, the power consumed by this bulb is given by

-Therefore, the Power consumed by this bulb across 110 V is 25 Watts.

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Mohamed Inaam 5 years, 2 months ago

25w

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ANSWER

What is equations of dipole?. Also write equations of that.

Posted by Pratik Kumar 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 5 years, 2 months ago

Based on scientific and mathematical conclusions, the dipole moment magnitude is the product of either of the charges and the separation distance (d) between them. Do remember that, the dipole moment is a vector measure whose direction runs from negative to a positive charge.

The formula for electric dipole moment for a pair of equal & opposite charges is p = qd, the magnitude of the charges multiplied by the distance between the two.

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ANSWER

What is the direction of electric current?

Posted by Pallavi Singh ??? 5 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Pallavi Singh ??? 5 years, 2 months ago

Thank u all to give me answer ??

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Rohan Rauniyar 5 years, 2 months ago

Conventional Current +ve ti -ve. Another current in P.D -ve to +ve.

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Ayush Ranjan 5 years, 2 months ago

The direction of an electric current is by convention the direction in which a posetive charge would move.

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Sushank Gupta 5 years, 2 months ago

Form higher concentration to low concentration(+ to -)

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Gopika Satheesh 5 years, 2 months ago

The direction of an electric current is by convention the direction in which a posetive charge would move.

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ANSWER

What is the electricity

Posted by Bhumika Tyagi 5 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Shivam Rai 5 years, 2 months ago

electricity is the flow of electric charge called electrons which flow from high potential difference to low potential difference in say, a wire

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Saniya Khanam 5 years, 2 months ago

Electricity is the presence and flow of electric charge. Using electricity we can transfer energy in ways that allow us to do simple chores. Its best-known form is the flow of electrons through conductors such as copper wires. The word "electricity" is sometimes used to mean "electrical energy". ?

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Ayush Ranjan 5 years, 2 months ago

Electricity is the flow of electrical power or charge. It is a secondary energy source which means that we get it from the conversion of other sources of energy, like coal, natural gas, oil, nuclear power and other natural sources, which are called primary sources

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ANSWER

5. How is the refractive index of the medium related to the speed of light through

Posted by Bobby Dubey 5 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Yogita Ingle 5 years, 2 months ago

Let v1 be the speed of light in medium 1 and v2 be the speed of light in medium 2. The refractive index of medium 2 with respect to medium 1 is given by the ratio of the speed of light in medium 1 and the speed of light in medium 2. This is usually represented by the symbol n21.

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Sagar Vats 5 years, 2 months ago

As high the refractive index less be the speed of light

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ANSWER

Some Cooking utensils have copper coating at the bottom give reason in 30 to 40 words

Posted by Aakriti Rustagi 5 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Bipin Bihari 5 years, 2 months ago

Cooking utensils have the copper coating at the bottom because copper is a good conductor of heat.

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Gagandeep Singh 5 years, 2 months ago

Utensils have copper coating at their bottom because copper is a good thermal conductor. It helps the food to get cooked faster due to its high thermal conductivity. Hence utensils have copper coating at the bottom

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Shabd Kumar 5 years, 2 months ago

The utensils of ancient time is made up of copper because that time we are unable to use the steel and Aluminium. And now we know that how is the utensils formed by the help of Steel and copper is expensive than steel and Aluminium so we use aluminium and copper utensils. Copper utensils are used in ancient time not now

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ANSWER

What is a hetrotrophic nutrition

Posted by Ramanjot Kaur 5 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Gagandeep Singh 5 years, 2 months ago

It is a mode of nutrition in which the organisms derive their food from other organisms (autotrophs). Ex-Human beings

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Rimjhim Goyal 5 years, 2 months ago

Heterotrophic is a type of nutrition where organism depend on other organism for their food. In these mode of nutrition plant or animal does not make their own food rather than depending on other for their food. Heterotrophic nutrition are of 3 types-- Saprophytic,holozoic,parasitic...

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Shabd Kumar 5 years, 2 months ago

Ramanjot kaur is 100% correct

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Shikhar Yadav 5 years, 2 months ago

Heterotrophic nutrition is a type of nutrition in which organisms depend upon other organisms for food to survive. Heterotrophic organisms have to take in all the organic substances they need to survive. we are also dependent because we also take vegetables and fruits and from animals we take meat, milk,fisheries. All animals, fungi, and non-photosynthesizing plants are heterotrophic. In contrast, green plants, red algae, brown algae, and cyanobacteria are all autotrophs, which use photosynthesis to produce their own food from sunlight

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Gopika Satheesh 5 years, 2 months ago

Heterotrophic nutrition is a type of nutrition in which organisms depend upon other organisms for food to survive.

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ANSWER

What is full form of ATP

Posted by Aman Singh 5 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Rimjhim Goyal 5 years, 2 months ago

Andnosine triphosphate

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Pawan Kumari 5 years, 2 months ago

Adenosine Tripolhosphate

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Ansh Jain 5 years, 2 months ago

Andosine triphosphate

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Shikhar Yadav 5 years, 2 months ago

adenosine triphosphate: an ester of adenosine and triphosphoric acid, C10H12N5O4H4P3O9, formed especially aerobically by the reaction of ADP and an orthophosphate during oxidation, or by the interaction of ADP and phosphocreatine or certain other substrates, and serving as a source of energy for physiological reactions, especially muscle contraction.

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Tanishk Badaya 5 years, 2 months ago

Adenocine triphospate

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ANSWER

What is a gas??

Posted by Muna Pandit 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Gaurav Seth 5 years, 2 months ago

In gases, particles are far apart from each other.
Force of attraction between the particles is negligible, and they can move freely.
Gases have neither a fixed volume nor a fixed shape.
The gaseous state has the highest compressibility as compared to solids and liquids.
The rate is diffusion is higher than solids and liquids.
The kinetic energy of particles is higher than in solids and liquids.
An example of gases: air, helium, nitrogen, oxygen, carbon dioxide, etc.

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ANSWER

DNA is the carrier of genetic information. Justify - 3 marks

Posted by Sujata Shah 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Gaurav Seth 5 years, 2 months ago

DNA is a molecule that encodes the genetic instructions used in the development and functioning of all known living organisms and many viruses. DNA is a nucleic acid along with certain proteins and carbohydrates. Nucleic acids compose the three major macromolecules essential for all known forms of life. Most DNA, molecules consist of two biopolymer strands coiled around each other to form a double helix. The two DNA strands are known as polynucleotides since, they are composed of simpler units called nucleotides. Each nucleotide is composed of a nitrogen-containing nucleobase.

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ANSWER

Corosen

Posted by Arun Pandey 5 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Karan Kumar 5 years, 2 months ago

Corrosion is a process when metal is attacked by the moisture and air . =Rusting of iron ( reddish brown coating) =Black coating on silver =Green coating on copper Rusting of iron can be prevented by painting, greasing, oiling or by galvanization

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Shabd Kumar 5 years, 2 months ago

First of all I want to tell you the spelling of corrosion is corrosion. When we talk about it it is a process of rusting of an iron or other metals and this process is known as corrosion. Hope it helps you

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Vansh Thakur 5 years, 2 months ago

*** mean

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ANSWER

What is semen ?

Posted by Raj Gupta 5 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Karan Kumar 5 years, 2 months ago

When the sperm (solid particles) mixes with the fluid (containing nutritions) that is known as semen. The passage or path is common for the semen and urine ie urethra of *****.

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Shabd Kumar 5 years, 2 months ago

It comes through ***. which is present in ***** of a human reproductive system. It consists many other types of fluids and sperms. I know that it helps you in future.during your ***

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Sachin Kumar 5 years, 2 months ago

It present male reproductive organ and make male garments and after that make sperm

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Yogita Ingle 5 years, 2 months ago

Semen is the mixture of fluid and sperm which comes out during sexual intercourse or when we get exited about sexual acts. it has its way though *****

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Innocent Boy 5 years, 2 months ago

It is a fluid produced by male sexual organs. Semen contains sperms

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ANSWER

Name the compound of carbon which have a longest carbon's chain.

Posted by Raj Gupta 5 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Raj Gupta 5 years, 2 months ago

It's petrol ok

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Abhinav Jaju 5 years, 2 months ago

Buckminsterflurence ie.C60 is longest carbon chain .it has 12 Pentagon and 20 hexagon

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Karan Kumar 5 years, 2 months ago

Carbon is the only metal that can make change continuous for unlimited. But according to our book the correct answer of your question is C60 (buckminsterfullerene)

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Yogita Ingle 5 years, 2 months ago

The longest continuous carbon chain has seven C atoms, so this molecule is named as a heptane

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Gopika Satheesh 5 years, 2 months ago

Heptane. I think so no sure about the answer

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ANSWER

What are fossils? Giving one example.

Posted by Khushi Anurag 5 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Yogita Ingle 5 years, 2 months ago

The remains of animals or plants that lived in the past are known as fossils. The fossil bird Archaeopteryx looks like a bird, but it has many other features that are also present in reptiles. This is because Archaeopteryx had feathered wings like those of birds, but teeth and tail like those of reptiles. Thus, the study of fossils provide evidence for evolution.

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Ankush Dey 5 years, 2 months ago

fossils is a stone which formation took place million of years ago

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ANSWER

Name the part of a lens through which a ray of light passes without suffering any deviation.

Posted by Mariya S.? 5 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Gagandeep Singh 5 years, 2 months ago

Optical centre

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Sujata Shah 5 years, 2 months ago

Optical centre

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Arya Dubey 5 years, 2 months ago

Optical Centre

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ANSWER

Name a cyclic unsaturated compound

Posted by Safa Khan 5 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Bipin Bihari 5 years, 2 months ago

Cyclo butene

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Sujata Shah 5 years, 2 months ago

Cyclobutane

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Innocent Boy 5 years, 2 months ago

cyclohexene

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Yogita Ingle 5 years, 2 months ago

Cyclic unsaturated carbon compounds are having at least one double or triple bond between carbon atoms in a cyclic compound.

Example :- Cyclopentene

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Kanishka . 5 years, 2 months ago

Benzene Formula: C6H6

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ANSWER

A uniform electric field of 10 N/C exists in a vertically downward direction. Find the increase in the electric potential through a height of 0.5m

Posted by Arvind Bhati 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Gaurav Seth 5 years, 2 months ago

The increase in the electric potential as one goes up through a height of 50 cm is 5 V.

Explanation:

Given values in the question :

E = 10 n/c

E is A uniform electric field

Change in height, ds = 50 cm

"ds" is a height

Converting height centimeter to meter :

(i.e ) One centimeter is one-hundred of a metre.

It would take 100 cm long to equal a single meter in length .

Change in electric potential, dv = E.ds

dv = 10×0.5

dv = 5 v

Thus, 5V raise the electric potential as one climbs up to 50 cm in height.

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ANSWER

find the value of angle of emergence when an incident ray makes an angle of 40 degree with a normal to the air glass interface of the rectangular glass slab?

Posted by Bobby Dubey 5 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Gagandeep Singh 5 years, 2 months ago

40⁰ because angle of incidence is equal to angle of emergence

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Yogita Ingle 5 years, 2 months ago

The angle of emergence is equal to incident in case of when a light is incident on a glass slab. So angle of emergence is equal to 40degree.

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ANSWER

Write 2 deferences b/w acquired traits & inherited traits with one example each.

Posted by Paru ? 5 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Paru ? 5 years, 2 months ago

Thank you guys for your answer ✌??

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Bobby Dubey 5 years, 2 months ago

1)acquired trait cannot be passed to progeny while inherited traits can be. 2)acquired trait do not bring changes in the DNA of germ cell instead bring in somatic cells while genes of inherited traits are present in DNA of germ cell.

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Yogita Ingle 5 years, 2 months ago

Inherited Trait	Acquired Trait
Characteristic features that are inherited from previous generation	Traits or characteristics which develop in response to the environment and cannot be inherited
Occur due to a change in genes or DNA	No change in genes or DNA is involved
Pass on from one generation to another	Cannot pass on from one generation to another
E.g. Red curly hair, Brown eyes	E.g. Cycling, Swimming

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ANSWER

Write 5 difference in homologous and analogues structures with example?

Posted by Khushi Anurag 5 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 2 months ago

Homologous Organs	Analaogous Organs
Homologous organs have similar origin n basic structure but perform different functions in different organisms	Analogous organs are different in basic structure but perform same functions.
Homologous organs show divergent evolution	Analogous organs show convergent evolution.
They develop in related organisms.	They develop in unrelated organisms.
Example- Forelimb of a frog and man seem to be built from the same basic design of bones but they perform different functions.	Example- Wings of birds and bats look similar. But in birds wings are covered by feathers all along the arm but the wings of bats is skin folds stretched between elongated fingers.

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What is the meaning of quantuzation of charge ?

Posted by Priya Singh 5 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Kamlendra Mishra 5 years, 2 months ago

Quantization refers to the minimum amount of charge that is able to exist freely in nature Its has no SI unit as what is in my knowledge sorry for the inconveniences

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Kamlendra Mishra 5 years, 2 months ago

An electric charge is fundamental property of element like mass

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Priya Singh 5 years, 2 months ago

What is electric charge ? Define its SI unit .

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ANSWER

Advantages and disadvantages of dams

Posted by Gopika Satheesh 5 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Gopika Satheesh 5 years, 2 months ago

Thank you

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Yogita Ingle 5 years, 2 months ago

Advantages :

1}These are the main source of power generation.

2}These projects control the floods because water can be stored in them. These projects have converted many, 'rivers of sorrows' into 'rivers of boon'.

3}Thes projects are the main source of irrigation and also help in conserving soil.

Disadvantages:

1}Dams also fragment rivers making it difficult for aquatic fauna to migrate for spawning, i.e , to produce eggs.

2}It resulted in displacement of local communities.

3}The multipurpose projects induced earthquake, caused waterborne diseases.

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ANSWER

Mention the physical change that occurr in human beings during their puberty

Posted by ಹರ್ಷನಂದ ಹರ್ಷನಂದ 5 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Karan Kumar 5 years, 2 months ago

IN BOYS:- 1.Higher pitched voice 2. Growing of facial hairs. 3. Growing of hairs near ***** 4. Shoulders become broader IN GIRLS:- 1. Low pitched voice 2. Growing of hairs near reproductive organ 3. Menstruation begin. 4. Hips become enlarged fog coming out of baby.

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Haripal Singh 5 years, 2 months ago

1)Adams apple develop 2)Beard and moustache grows. 3)chest grows 4)sudden increase in height 5) development of hairs at different parts of body 6) voice bursts

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ANSWER

Mention the tricks for balancing chemical equation?

Posted by Kanku Rakes 5 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Kamlendra Mishra 5 years, 2 months ago

To balance equations it is esay method to count all the no of atom of element in the equations separately First of all calculate the atoms of product side then compare it with the reacting side

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ಹರ್ಷನಂದ ಹರ್ಷನಂದ 5 years, 2 months ago

ನಂಗ್ ಗೊತ್ತಿಲ್ಲ ಬೇಜಾರ್ ಮಾಡ್ಕೋಬೇಡ

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ANSWER