Q52 of 112 Page 311

How many images of an object will be formed when the object is placed between two plane mirrors which are inclined at the following angles to one another?

(a) 120°


(b) 45°


(c) 180°


(d) 60°


(e) 90°

The formula to calculate the no. of images of an object placed between 2 plane mirrors- (360/θ)−1; where theta is the angle of inclination.

a- 2 (360/120)-1= 3-1 =2


b- 7 (360/45)-1= 8-1 =7


c- 1 (360/180)-1= 2-1 =1


d- 5 (360/60)-1= 6-1 =5


e- 3 (360/90)-1= 4-1 =3


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