Question

Rohit pocket the image of a candle on a white screen using convex lens he noted that down the position of a candle screen screen and lens as under position of the candle

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)