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A concave lens is the lens which is Converse the light rays so we can draw image by putting an object between pole and focus and between focus and centre and c and fiance

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How are the sperms delivered from the site of their production

Posted by K S 1 year, 1 month ago

CBSE > Class 10 > Science

1 answers

Drishti Arora 1 year, 1 month ago

Sperm from the testis mature as they move through the coiled duct of the epididymis. During sexual intercourse and ejaculation, they are expelled into the vas deferens. The vas deferens pushes the sperm up over the bladder and down toward the prostate gland.

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what is photosyntsis?

Posted by Kal Bal 1 year, 1 month ago

CBSE > Class 10 > Science

5 answers

Yashsavi Parihar 1 year, 1 month ago

Green plants prepare their own food in the presence of sunlight and chlorophyll and having co2 and water, this process is called photosynthesis.

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Shreya Gupta 1 year, 1 month ago

This process making food in plant this process.making and sunlight and chlorophyll presence

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Garima Chandan 1 year, 1 month ago

Photosynthesis is the process of making food by plants with the help of sunlight and chlorophyll

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Jiya Rani 1 year, 1 month ago

Photosynthesis is the process of obtaining food by plants with the help of sunlight and chlorophyll

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Divyanshi Mishra 1 year, 1 month ago

The process of making plant's food in the presence of sunlight, CO2 and water is known as photosynthesis

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What are the functions performed by testis in human beings

Posted by Ashima Aggarwal 1 year, 1 month ago

CBSE > Class 10 > Science

4 answers

Kushagra Mishra 1 year, 1 month ago

1). Helps in making male *** harmones in body (testosterone) 2).responsible for making Male gamates(sperm)in body🤗

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Shreya Gupta 1 year, 1 month ago

Testies in present male reproductive system this produce sperm

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Mritunjay Gautam 1 year, 1 month ago

Testies sperm banane ka kaam krte h

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Mritunjay Gautam 1 year, 1 month ago

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is there is best notes is available... with detailed ncert and in easy or technical both words are in use

Posted by Bhumika . 1 year, 1 month ago

CBSE > Class 10 > Science

2 answers

Aashvi Yadav 1 year, 1 month ago

U can study from magnet brains

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Sangram Keshari Panda 1 year, 1 month ago

Yes

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Is zinc brittle

Posted by Gargi Sardeshpande 1 year, 1 month ago

CBSE > Class 10 > Science

3 answers

Naman Jain 1 year, 1 month ago

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Divyanshi Mishra 1 year, 1 month ago

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Priyanshi Tripathi 1 year, 1 month ago

No.... Zinc is a metal and metal is not brittle except ...sodium and potassium

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Ch 8 notes

Posted by Aniket Roy 1 year, 1 month ago

CBSE > Class 10 > Science

1 answers

Sunny Singhaniya 1 year, 1 month ago

Yes I have

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Ch-7 ke notes

Posted by Kiran Patasni 1 year, 1 month ago

CBSE > Class 10 > Science

1 answers

Arin Maheshwari 1 year, 1 month ago

Notes of Chapter - 7, Control and Coordination https://www.learncbse.in/control-and-coordination-class-10-notes/

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Why convex lens has positive focal length?

Posted by Bhrakuti Singh 1 year, 1 month ago

CBSE > Class 10 > Science

4 answers

Arin Maheshwari 1 year, 1 month ago

The focal length of a convex lens is positive according to sign convention as the light rays converge on the opposite side from where the light ray is coming after passing through the lens.

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Ved Gotiya 1 year, 1 month ago

Because if we make convex lens with Cartesian plane the focal length of convex lens it will come in the side of positive X-AXIS, so focal length will be positive.

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Aman Kumar 1 year, 1 month ago

Because of Sign Covention

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Rudra 💪🏻💪🏿 Raut 1 year, 1 month ago

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How does paramecium obtain it's food

Posted by Sakshi Hans 1 year, 1 month ago

CBSE > Class 10 > Science

3 answers

Arin Maheshwari 1 year, 1 month ago

How does Paramecium obtain it's food? Paramecium is a single-celled protozoan. It obtains its food in the following manner: The hair-like structures called cilia present on the paramecium help in collecting the food and movement. They sweep the food inside the paramecium through the oral groove.

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Lakshay Swami 1 year, 1 month ago

It is a unicellular organisam.food taken by the help of Cillian ( hair like structures which cover whole body ) cilli take food in mouth by its movement

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Sandhya Pradhan 1 year, 1 month ago

By the process of phagocytosis

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What in the chemical formula of MARBLE ?

Posted by Kavita Singh 1 year, 1 month ago

CBSE > Class 10 > Science

5 answers

Sharvan Verma 1 year, 1 month ago

Calciam carbonate

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Tanu Mishra 1 year, 1 month ago

Calcium carbonate

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Randheer Singh 1 year, 1 month ago

CaCo3

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Shivam Antil 1 year, 1 month ago

Calcium carbonate (CaCO3)

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Muskan Negi 1 year, 1 month ago

Calcium carbonate

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What is hydrolysis ??

Posted by Sneh Choudhary 1 year, 1 month ago

CBSE > Class 10 > Science

1 answers

Arin Maheshwari 1 year, 1 month ago

Hydrolysis is a common form of a chemical reaction where water is mostly used to break down the chemical bonds that exists between a particular substance. Hydrolysis is derived from a Greek word hydro meaning water and lysis which translates to the word break or to unbind.

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What is the reaction to produce washing soda?

Posted by Sneha Agarwal 1 year, 1 month ago

CBSE > Class 10 > Science

3 answers

Arin Maheshwari 1 year, 1 month ago

Washing soda is synthesized through Solvay's process. Solvay's process involves the reaction of sodium chloride, ammonia and carbon dioxide in water. Carbon dioxide involved is produced through calcium carbonate and the calcium oxide left is used in recovering ammonia from ammonium chloride.

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Ishan Paul 1 year, 1 month ago

Washing soda : Na2co3 10H20 Procedure: Nacl +H20 + CO2 + NH3- NaHCO3+ NH4CL NaHCO3‌( heat) - Na2co3 + h20 Na2co3 on further reacting with 10 molecukws of h20 FORMS SODIUMCARBONATEDECAHYDRATE। 0r washing soda।

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Aadhya Soni 1 year, 1 month ago

First.... NaHCO3 is heated It gives Na2CO3 + H20 +CO2 Then..., Na2CO3 +10 H20 = Na2CO3.10 H2O This is how it is prepared

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ANSWER

Heart diagram with label

Posted by Tanushi Yadav 1 year, 1 month ago

CBSE > Class 10 > Science

1 answers

Ankit Rajawat 1 year, 1 month ago

Don't post personal information, mobile numbers and other details.
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An object of 5 cm height is placed at a distance of 20 cm from the optical centre of a concave lens of focal length 18 cm calculate image distance and the magnification in this case

Posted by Pratiksha Sulya Farsingh Sulya 1 year, 1 month ago

CBSE > Class 10 > Science

0 answers

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What is the reactivity series of metal

Posted by Yash Sharma 1 year, 1 month ago

CBSE > Class 10 > Science

4 answers

Muskan Negi 1 year, 1 month ago

K,Na,Ca,Mg,Al,Zn,Fe,Pb,H,Cu,Hg,Ag,Au,Pt

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Vinod Vyavhare 1 year, 1 month ago

form higher to lower K, N, Ca, Mg, Al, C, Zn, Fe, Sn, Pb, H, Cu, Ag, Au, Pt this series has 2 non-metals carbon and hydrogen it is included in it because it helps to form many chemical equations here are it's mnemonics "Please Stop Calling Me A Careless Zebra Instead Try Learning How Copper Saves Gold Platinum"

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Vanshika Baluni 1 year, 1 month ago

K Na Ca Mg Al Zn Fe Sn Pb H Cu Hg Ag Au

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Mitesh Kalal 1 year, 1 month ago

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Hydrochlorine ka formula

Posted by Ravinder Jakhar 1 year, 1 month ago

CBSE > Class 10 > Science

5 answers

Vanshika Baluni 1 year, 1 month ago

HCl

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Yash Sharma 1 year, 1 month ago

HCL

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Ritesh Chourasia 1 year, 1 month ago

HCL

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Ayusha Samanraraya 1 year, 1 month ago

Hcl

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Nikhil Raphael Antonie 1 year, 1 month ago

HCl

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What is the difference between uniform motion and uniform speed

Posted by Himanshu Kumar Gupta 1 year, 1 month ago

CBSE > Class 10 > Science

1 answers

Ravinder Jakhar 1 year, 1 month ago

Oxygen ka formula

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What is avatal and uttal Lance

Posted by Rukamani Rukamani 1 year, 1 month ago

CBSE > Class 10 > Science

1 answers

Akriti Kumari 1 year, 1 month ago

Uttal means convex lens and abtak means concave lens

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What is absolute refractive index and relative??

Posted by Jeeva Dharshini 1 year, 1 month ago

CBSE > Class 10 > Science

4 answers

Drishti Arora 1 year, 1 month ago

Absolute refractive index of a medium is defined as the ratio of the velocity of light in vacuum to the velocity of light in the medium. If c is the velocity of light in vacuum and v in the medium, then n = c/v. The relative refractive index between a pair of media is the ratio of their absolute refractive indices.

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Uttkarsh 1 year, 1 month ago

Absolute refractive index is the rate of refraction of light from air to another medium. While relative relative refractive index is rate of refraction of light from one medium to another

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Prashant Singh 1 year, 1 month ago

Absolute refractive index is the ratio of speed of light in air/vaccum to the speed of light in another medium, whereas relative refractive index is the ratio of speed of light in one medium to the speed of light in another medium.

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Raunit Raj 1 year, 1 month ago

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A battery of 9v is connected in series with resistors of 0.2Ω,0.3Ω,0.4Ω,0.5Ω and 12Ω respectively how much current would flow through the 12Ω resistor

Posted by Sneha Agarwal 1 year, 1 month ago

CBSE > Class 10 > Science