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A student has to do the experiment on finding the focal length of a given concave mirror by using a distant object. Out of the following 'set-ups' A, B, C and D available to him:A : a screen, a mirror holder and a scaleB : a mirror holder, a screen holder and a scaleC : a screen holder and a scaleD : a mirror holder and a scaleThe 'set-up' which is likely to give him the best result is :(1) A(2) B(3) C(4) D

Answer» A student has to do the experiment on finding the focal length of a given concave mirror by using a distant object. Out of the following 'set-ups' A, B, C and D available to him:

A : a screen, a mirror holder and a scale

B : a mirror holder, a screen holder and a scale

C : a screen holder and a scale

D : a mirror holder and a scale



The 'set-up' which is likely to give him the best result is :

(1) A

(2) B

(3) C

(4) D


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