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Subject: Physics, asked on 15/3/18

A lens forms the image of an object placed at a distance 25cm from it, at a distance of 60cm in front of it. Find its focal length

Subject: Physics, asked on 3/7/18

An illuminated object lies at distance 1m from a screen.a convex lens is used to form the image of object on a screen placed at distance 75c from the lens find the focal length of lens.

Subject: Physics, asked on 20/12/17

Why does the light splits in prism but not in glass slab??

Subject: Physics, asked on 21/12/17

about ray diagrams

Subject: Physics, asked on 10/12/18

What is no work force and give an example for it?

Subject: Physics, asked on 23/12/17

If angle of incidence of red light is 15 degree and that of violet is 80 degree. Whose lateral displacement is greater?

Subject: Physics, asked on 2/7/18

The diagram shows a point source P inside a water container. Three rays A, B and C starting from the source P are shown up to the water surface.(a) Show in the diagram the part of these rays after striking the water surface. The critical angle of the water surface is 48 degree.(b)Name the phenomenon which the rays A, B and C exhibit.

Subject: Physics, asked on 18/1/18

Why does a mirage occur? Pls. explain in detail

Subject: Physics, asked on 18/2/18

Please answer question 7
Q.7. A light ray incident obliquely, passes into three media as shown in figure. The refractive index of medium 3 with respect to medium 1 is


(1) 32
(2) 12
(3) 3
(4) 2

Subject: Physics, asked on 29/5/19

How does the value of angle of deviation produced by a prism changes with an increase in the value of angle of incidence.

Subject: Physics, asked on 1/6/18

PHYSICS BOARD QUESTIONS: Do give correct answer of the 15th question."DO NOT SEND ANSWERS THROUGH LINKS"

Subject: Physics, asked on 4/7/18

At what position a candle of length 3 cm be placed in front of a convex lens so that its image of length 6M be obtained on a screen placed at a distance of 30 cm behind the lens and what is the focal length of the lens

Subject: Physics, asked on 29/3/20

What is meant by vertical shift and lateral shift. Find the difference between vertical shift and lateral shift

Subject: Physics, asked on 29/3/18

12 13 14 15:

12. If a person moves towards a plane mirror with speed of 2 m/s, with what speed is he moving towards the the image?

13. An object at a distance 25cm in front of a plane mirror. The mirror is shifted 5cm away from the object. Find :
(i) The new distance between the object and the image 
(ii) The distance between the two positions of the image.

14. A man is standing 5m from a mirror. How far is he from his own image ?

Subject: Physics, asked on 29/1/18

Which is the best school in India?

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