A student focus the image of a candle fame on a white screen using a convex lens. He noted down the position of the candle, screen and the lens as under:
Position of candle= 12cm
Position of convex lens= 50cm
Position of screen= 88cm
a) What is the length of the focal length?
b) Where will the image be formed if he shifts the candle towards the leans at a position of 31cm.
c) What will be the nature of the image formed, if he further shifts the candle towards the lens.
d)Draw a ray diagram to show the formation of the image in case (c) as said above...