Question

At what angle θ will 2 plane mirrors be inclined so that 11 images will be formed when an object is placed in front of the two mirror?

Answer 1

Answer:

n= number of images = 360÷ theta

n= 11 given

but object is placed in front of the two mirrors therefore the object lies on the angle bisector of two mirrors

therefore n=12

therefore, theta(angle)= 360÷12 = 30 degree.

therefore, angle formed by two mirrors is 30 degree.

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Answer 2

Answer:30

Explanation: 11+1=12

360/12=30