Question

To determine the approximate value of focal length of the given concave

mirror, if you have focussed the flame of a burning candle placed on the table

and for a better value of focal length you want to focus the parallel rays from

the rising sun which are entering through the window on the same experimental

set-up, you will move the

(A) screen towards the sun

(B) mirror towards the screen

(C) mirror away from the screen

(D) the whole experimental set-up towards the window​

Answer 1

Answer:

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Explanation:

(C) mirror away from the screen

Answer 2

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Explanation:

(C) mirror away from the screen.

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