Question

A boy of height 1 m stands in front of a convex mirror. His distance from the mirror is equal to its focal length. The height of his image is :

(A)  0.25 m

(B)  0.33 m

(C)  0.5 m

(D)  0.67 m

Answer 1

Correct option  (C) 0.5 m

Explanation :

1/V + 1/u = 1/f

⇒ 1/v + 1/(-f) = 1/f

⇒ V = f/2

m = 1/2

height of image  = 1/2