A concave mirror is used to form image of the Sun on a white screen. If the lower half of the mirror

Question

A concave mirror is used to form image of the Sun on a white screen. If the lower half of the mirror were covered with an opaque card, the effect on the image on the screen would be

Professor PC Thomas Classes · Answer

Covering the lower half of the mirror reduces the amount of light forming the image but does not change the position or shape of the image. Thus, the image becomes less bright. Correct Option is B.