Question

a light bulb is placed midway between two plane mirrors inclined at an angle of 40. the number of images formed are (a) 5 (b) 4(c) 6(d) 8

Answer 1

answer is 8, 8 images are formed

Answer 2

It should be d.  Use the formula:- No.of images formed = (360°/theta)- 1 ( if the value is odd ) and if the value is even use just 360/ theta