Q. If the lower half of a concave mirror’s reflecting surface is made opaque, which of the following statements describe the image of an object placed infront of the mirror S1: Intensity of the image will increase S2: The image will show only half of the object S3: No change in the image S4: Intensity of the image will be reduced to half
A) S1 only
B) S2 only
C) S2 and S3
D) S4 only
Explanation
(d) As laws of reflection to be true for all points of the remaining part of the mirror, the image will be that of the whole object. However, as the area of the reflecting surface has been reduced, the intensity of the image will reduce (in this case half)
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.