Question

A candle is kept at a distance of 15 cm from a convey lens and its image is obtained on a screen
placed at a distance of 20 an from the lens. Now if the lens is shifted 'X' distance towards the screen
without displacing the candle or the screen, again a sharp image is obtained. The value of x is
(A) 10 cm
(B) 15 cm
(C) 20 cm
(D) 25 cm​

Answer 1

Answer:

20 cm

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