Question

Rohit focused the image of a candle flame on a white screen using a convex lens. He noted down the position of the candle , screen and lens as under : Position of candle = 26.0 cm Position of convex lens = 50.0 cm Position of screen = 74.0 cm
what is the focal length, image distance and object distance, and why?

Answer 1

i) u = 50 - 26 = 24 cm

v = 74 - 50 = 24 cm

2f = 24 cm

f = 24/2 = 12 cm

ii) u = 50 - 38 = 12 cm

i.e. Candle is at f

So, image is formed at infinity.

iii)
Plz..mark as brilliant answer

Answer 2

Hope it will help u ...☺☺