Question

a student focused the flame of a candle on a screen with the help of a convex lens. He noted the positions of candle, lens and the screen on the scale As given below :

position of candle = 14 cm
position of lens = 50 cm
position of screen = 86 cm

find the focal length of the lens.
if under the given condition, height of the flame is 3 cm, what would be the height of the image obtained on the screen.
if it displaces the candle to 32 cm , where will the image be formed and what will be its nature. Give reason for your answer?

After this he further displaces the candle towards the lens, what will be the nature of the image formed and where will it be ?​

Answer 1

Explanation:

the answer is only in this so it can fit in this