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How the image form in TV?

Posted by Lucifer ? Morningstar? 5 years, 6 months ago

CBSE > Class 10 > Science

1 answers

Mithali Pattanaik?? 5 years, 6 months ago

Television is an amazing window on the world. At the flick of a button, you can travel from the North Pole to the Serengeti, watch men walking on the Moon, see athletes breaking records, or listen to world leaders making historic speeches. Television has transformed entertainment and education; in the United States, it's been estimated that children spend more time watching TV (on average 1023 hours a year) than they do sitting in school (900 hours a year). Many people feel this is a bad thing. One of TV's inventors, Philo T Farnsworth (1906–1971), came to the conclusion that television was hopelessly dumbed down and refused to let his children watch it. Whether TV is good or bad, there's no doubting that it's an ingenious invention

ANSWER

State the law of conservation of mass.

Posted by Lucifer ? Morningstar? 5 years, 6 months ago

CBSE > Class 10 > Science

5 answers

Ankit Singh Thakur 5 years, 6 months ago

Lucifer Morning star u know Himanshi Tyagi

Vaibhav (Silent Love)?? Avi 270505??? 5 years, 6 months ago

Acc to the law of conservation of mass neither be created nor be destroyed it means that the total mass of the product is=to the total mass of reactant their will be no change during chemical reaction

Ishika ? 5 years, 6 months ago

Most wlcm??

Lucifer ? Morningstar? 5 years, 6 months ago

Thanx

Ishika ? 5 years, 6 months ago

The law of conservation of mass states that mass neither be created nor be destroyed in a chemical reaction.☺️☺️

ANSWER

How baby is formed as an embryo

Posted by Aditya Raj 5 years, 6 months ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 5 years, 6 months ago

During fertilization, the sperm and egg unite in one of the fallopian tubes to form a zygote. Then the zygote travels down the fallopian tube, where it becomes a morula. Once it reaches the uterus, the morula becomes a blastocyst. The blastocyst then burrows into the uterine wall — a process called implantation. The distinction between embryo and fetus is made based on gestational age. An embryo is the early stage of human development in which organs are critical body structures are formed. An embryo is termed a fetus beginning in the 11th week of pregnancy, which is the 9th week of development after fertilization of the egg.

ANSWER

List two different function performed by pancreas in our body?

Posted by Mahi..... ♾ 5 years, 6 months ago

CBSE > Class 10 > Science

2 answers

Meghna Thapar 5 years, 6 months ago

The pancreas is an organ located in the abdomen. It plays an essential role in converting the food we eat into fuel for the body's cells. The pancreas has two main functions: an exocrine function that helps in digestion and an endocrine function that regulates blood sugar. The pancreas produces enzymes to help break down proteins, fats and carbohydrates.

Nikku Shekhawat 5 years, 6 months ago

Pancreas performs following two main functions in our body:- (i) Exocrine function: It works as an exocrine gland and helps in the digestion of food. It produces various enzymes such as amylase, lipase and trypsin which help to breakdown carbohydrate, fats and proteins respectively. (ii) Endocrine function: While working as an endocrine gland it secrets two major hormones, insulin and glucagon which regulate the level of sugar present in the blood.

ANSWER

What is the funtion of voltmeter in an electric circuit?

Posted by Mahi..... ♾ 5 years, 6 months ago

CBSE > Class 10 > Science

2 answers

Lucifer ? Morningstar? 5 years, 6 months ago

To measure electric potential.

Meghna Thapar 5 years, 6 months ago

A voltmeter is an instrument used for measuring electrical potential difference between two points in an electric circuit. Analog voltmeters move a pointer across a scale in proportion to the voltage of the circuit; digital voltmeters give a numerical display of voltage by use of an analog-to-digital converter. An ammeter is a measuring device used to measure the electric current in a circuit. A voltmeter is connected in parallel with a device to measure its voltage, while an ammeter is connected in series with a device to measure its current.

ANSWER

Why is boigas considered an excellent fuel?

Posted by Mahi..... ♾ 5 years, 6 months ago

CBSE > Class 10 > Science

2 answers

Mahi..... ♾ 5 years, 6 months ago

Thx

Lucifer?? Morningstar?? 5 years, 6 months ago

Biogas is considered an ideal fuel for domestic use because: (a) Biogas burns without smoke and hence does not cause air pollution. (b) Biogas has a high calorific value.

ANSWER

List two merits of solar cell.

Posted by Mahi..... ♾ 5 years, 6 months ago

CBSE > Class 10 > Science

2 answers

Vaibhav (Silent Love)?? Avi 270505??? 5 years, 6 months ago

The energy can be used both to generate electricity and heat in the house, either through solar PV or solar thermal. Renewable energy is recovered from the sun, the wind and waves - which in this case is the sun. Solar cells harness the energy from the sun and transform this into usable electricity

Lucifer?? Morningstar?? 5 years, 6 months ago

Solar power is pollution free and causes no greenhouse gases to be emitted after installation. Reduced dependence on foreign oil and fossil fuels.

ANSWER

State the law of reflection of light ?

Posted by Mahi..... ♾ 5 years, 6 months ago

CBSE > Class 10 > Science

4 answers

Study Lover ?‍? ?‍? 5 years, 6 months ago

There are 2 laws of reflection- 1. The incident ray,reflected ray and normal all lie on the same plane at same point. 2.Angle of incidence is equal to angle of reflection.

Mahi..... ♾ 5 years, 6 months ago

Thx to both of you ??

Yash Aryan 5 years, 6 months ago

Angle of incident is equal to angle of reflection

Lucifer?? Morningstar?? 5 years, 6 months ago

The law of reflection states that when a ray of light reflects off a surface, the angle of incidence is equal to the angle of reflection.

ANSWER

How will I get Ques paper of year 2019-20

Posted by Garima Yadav 5 years, 6 months ago

CBSE > Class 10 > Science

2 answers

Garima Yadav 5 years, 6 months ago

Thanks for answering

Mithali Pattanaik?? 5 years, 6 months ago

Jis subject ka chahiye usko click karo do aur ussma previous years paper mai hoga

ANSWER

Name the two elementthat are used in fabricating solar cell?

Posted by Mahi..... ♾ 5 years, 6 months ago

CBSE > Class 10 > Science

3 answers

Vaibhav (Silent Love)?? Avi 270505??? 5 years, 6 months ago

Silicon and silver

Lucifer?? Morningstar?? 5 years, 6 months ago

Silicon and silver are the two elements that help in fabricating the solar cells

Mahi..... ♾ 5 years, 6 months ago

,

ANSWER

Explain an activity to show that a current carrying conductor experiences a force when placed in a magnetic field

Posted by Vaibhav . 5 years, 6 months ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 5 years, 6 months ago

Fleming's left-hand rule.

If the forefinger points in the direction of magnetic field and the middle finger in the direction of current, then the thumb will points in the direction of motion or the force acting on the conductor. A current carrying conductor placed in a magnetic field experiences a force. If the direction of the field and that of current are mutually perpendicular to each other, then the force acting on the conductor will be perpendicular to both and that can be determined using the Fleming's left-hand rule.

ANSWER

Solved numericals of chapter ELECTRICITY

Posted by Yuvraj Singh 5 years, 6 months ago

CBSE > Class 10 > Science

1 answers

Yuvraj Singh 5 years, 6 months ago

Na

ANSWER

Give me notes of chapter chemical reaction and equation

Posted by Rinki Verma 5 years, 6 months ago

CBSE > Class 10 > Science

4 answers

Satyam Kumar Rai 5 years, 6 months ago

O

Priyanshu Maurya 5 years, 6 months ago

I have but where i send can i have WhatsApp number

Priyanshu Maurya 5 years, 6 months ago

Ok

Lucifer?? Morningstar?? 5 years, 6 months ago

It is present in this app

ANSWER

What happens to the concentration of H+ ions when we dissolve a strong acid and weak base respectively.

Posted by Suryansh Singh 5 years, 6 months ago

CBSE > Class 10 > Science

2 answers

Meghna Thapar 5 years, 6 months ago

The higher the concentration of H plus ions, the more acidic the solution and the lower the concentration of H plus ions, the less acidic the solution. And similarly, the basic strength of a solution, it depends on the concentration of OH minus ions. Titration of a weak base with a strong acid. In a weak base-strong acid titration, the acid and base will react to form an acidic solution. A conjugate acid will be produced during the titration, which then reacts with water to form hydronium ions. This results in a solution with a pH lower than 7.

Study Lover ?‍? ?‍? 5 years, 6 months ago

Concentration of H+ion decreases

ANSWER

?Why is Aluminium metal is called self protecting metal.❓❓

Posted by Ishika ? 5 years, 6 months ago

CBSE > Class 10 > Science

3 answers

Hippie Maari 5 years, 6 months ago

Ishika your are most beautiful person where i never seen in my life

Gaurav Seth 5 years, 6 months ago

When aluminium is exposed to the air, this overactive metal promptly reacts with the atmospheric oxygen to form aluminium oxide, which is a sticky natured compound of the same colour.

Thus, the aluminium protects itself from any corrosion by the formation of a layer of aluminium oxide over the entire metal surface and thus, aluminium is termed as a self-protecting metal.

? Rahul ? 5 years, 6 months ago

Bae??

ANSWER

What is mater

Posted by Abishu Gupta 5 years, 6 months ago

CBSE > Class 10 > Science

3 answers

Aashi Yadav 5 years, 6 months ago

Everything in this universe which occupies space and have volume is known as matter

Vaibhavi Arya 5 years, 6 months ago

Matter is any substance that has weight and ocupies space.

Meghna Thapar 5 years, 6 months ago

Matter is a substance that has inertia and occupies physical space. According to modern physics, matter consists of various types of particles, each with mass and size. The most familiar examples of material particles are the electron, the proton and the neutron. ... Matter can exist in several states, also called phases. In science, matter is the term for any type of material. Matter is anything that has mass and takes up space. At a minimum, matter requires at least one subatomic particle, although most matter consists of atoms. The word matter is sometimes used to refer to a pure substance.

ANSWER

What is the differnce between resistance and resistivity??

Posted by Swapna Nasikkar 5 years, 6 months ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 5 years, 6 months ago

1. Resistance is the physical property of a substance because of which it opposes the flow of current i.e. electrons whereas resistivity is the physical property of a particular substance which is having particular dimensions.

2. Resistance is directly proportional to the length and temperature while it is inversely proportional to the cross-sectional area of the material whereas resistivity is only proportional to the nature and temperature of the particular material.

ANSWER

What is contentment zone?

Posted by Lucifer ? Morningstar? 5 years, 6 months ago

CBSE > Class 10 > Science

1 answers

Sia ? 4 years, 6 months ago

According to the Union Ministry for Health and Family Welfare, containment zones are specific geographic areas where Covid-19 positive cases are found in large numbers.

ANSWER

Full form of lid

Posted by Aniket Choudhary Amam Choudhary 5 years, 6 months ago

CBSE > Class 10 > Science

3 answers

Disha Macwan 5 years, 6 months ago

Low impact development

Ayush Raj 5 years, 6 months ago

Low Impact Development

Lucifer?? Morningstar?? 5 years, 6 months ago

Low impact development

ANSWER

Why does the sun appear reddish early in the morning??

Posted by Mahi....... . 5 years, 6 months ago

CBSE > Class 10 > Science

1 answers

Lucifer ? Morningstar? 5 years, 6 months ago

Red colour has a longer wavelength, the red colour is able to reach our eyes after the atmospheric scattering of light. Therefore, the Sun appears reddish early in the morning.

ANSWER

Which convex lens is called converging lens?

Posted by Mahi....... . 5 years, 6 months ago

CBSE > Class 10 > Science

1 answers

Lucifer ? Morningstar? 5 years, 6 months ago

A convex lens is also called a converging lens because it makes parallel light rays passing through it bend inward and meet (converge) at a spot just beyond the lens known as the focal point.

ANSWER

State the role of eye lens in the human eye??

Posted by Mahi....... . 5 years, 6 months ago

CBSE > Class 10 > Science

1 answers

Lucifer ? Morningstar? 5 years, 6 months ago

By changing its shape, the lens changes the focal distance of the eye. In other words, it focuses the light rays that pass through it (and onto the retina) in order to create clear images of objects that are positioned at various distances.

ANSWER

What is KVL and KCL?

Posted by Deepa Kumari 5 years, 6 months ago

CBSE > Class 10 > Science

1 answers

Lucifer ? Morningstar? 5 years, 6 months ago

The KVL states that the algebraic sum of the voltage at node in a closed circuit is equal to zero. The KCL law states that, in a closed circuit, the entering current at node is equal to the current leaving at the node

ANSWER

Device which is used to measure blood pressure

Posted by Deepa Kumari 5 years, 6 months ago

CBSE > Class 10 > Science

5 answers

Annu Kumari 5 years, 6 months ago

Sphygmomanometer

Vivek Yadav 5 years, 6 months ago

Sphygmomanometer

Helper . 5 years, 6 months ago

Google pe search maro???

Study Lover ?‍? ?‍? 5 years, 6 months ago

Sphygmomanometer

Lucifer ? Morningstar? 5 years, 6 months ago

Sphygmomanometer

ANSWER

डिफरेंस between mirror and lens.

Posted by Lucifer ? Morningstar? 5 years, 6 months ago

CBSE > Class 10 > Science

2 answers

Study Lover ?‍? ?‍? 5 years, 6 months ago

I hope this helps you.??

Study Lover ?‍? ?‍? 5 years, 6 months ago

1.mirror has one reflecting surface while lens has 2 reflecting surfaces. 2.mirror has one focus while lens has 2 focus. 3.One side of mirror is silvered while lens has no silvered side. 4.lens is used in spectacles while mirror is not used for spectacles. 5.Mirror formula is 1/f=1/v+1/u while lens formula is 1/f=1/v-1/y. 6.Light is refracted by lens while mirror can't reflect light.

ANSWER

Working of dynamo

Posted by Deepa Kumari 5 years, 6 months ago

CBSE > Class 10 > Science

1 answers

Lucifer ? Morningstar? 5 years, 6 months ago

The electric dynamo uses rotating coils of wire and magnetic fields to convert mechanical rotation into a pulsing direct electric current through Faraday's law of induction and Lenz's law.

ANSWER

Milk is veg or non-veg?

Posted by Lucifer?? Morningstar?? 5 years, 6 months ago

CBSE > Class 10 > Science

3 answers

Disha Macwan 5 years, 6 months ago

Non veg

Helper . 5 years, 6 months ago

Semiterian

? Rahul ? 5 years, 6 months ago

Ofcourse bro milk is veg...

ANSWER

Why did mendal choose pea plant for his experiment ?

Posted by Lucifer ? Morningstar? 5 years, 6 months ago

CBSE > Class 10 > Science

2 answers

? Rahul ? 5 years, 6 months ago

Mere questions ka bhi answer de do...??

Ishika ? 5 years, 6 months ago

Its because pea plant grow two times in a year and it can breed many times than the other plant.☺️☺️

ANSWER

Limitations of modern periodic table

Posted by Anushka ?? 5 years, 6 months ago

CBSE > Class 10 > Science

3 answers

Anushka ?? 5 years, 6 months ago

How???

Lucifer?? Morningstar?? 5 years, 6 months ago

U know, how i miss u????

Lucifer?? Morningstar?? 5 years, 6 months ago

a) Position of hydrogen: It could not assign a correct position to hydrogen in the table. (b) The lanthanides and actinides are not placed in the main body of the table. (c) Position of isotopes: There are no separate positions for isotopes of an element

ANSWER

What is the colour of solid ferrous sulphate❓❓

Posted by Ishika ? 5 years, 6 months ago

CBSE > Class 10 > Science

5 answers

Ishika ? 5 years, 6 months ago

Thanks himanshi??

꧁༒ Shaurya༻ 5 years, 6 months ago

Light green

Ishika ? 5 years, 6 months ago

Thanks both of u..☺️☺️☺️

Anushka ?? 5 years, 6 months ago

Light green

Lucifer?? Morningstar?? 5 years, 6 months ago

Light green

ANSWER

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