Question

find the angle between two plane mirrors if the number of images formed are 11

Answer 1

Answer:

The formula to find the number of images between two mirrors inclined at theta deg to each other is 360/theta - 1 = 11,

or,360/theta = 12,

or,theta = 360/12 = 30 deg.

The two mirrors are inclined at 30 deg to each other.

Answer 2

Explanation:

As we know that the number of images formed when. mirrors are placed at an angle is given by

360/n -1( In case of odd images)

Here, n is the angle between two mirrors.

so, 360/n -1 = 11

therefore,

360/n = 12

n = 30 degrees ans.