Question

A luminous point source s placed between plane mirror and screen. then the length of screen which will receive direct as well as reflected light ​

Answer 1

ans =40

Lenght of the reflected part of the light will be same as that of the object, since, in a plane mirror, size of the image formed is same as that of the object. However, the question is vague because plane mirror forms a virtual image which can never be obtained on a sc

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