Question

the number of image of an object placed b/n two mirrors is 4. What is the angle b/n the
mirrors ?

Answer 1

Answer:

No. of images = 4

Now,

No. of images = 360/Φ - 1

where Φ = angle between the two mirrors

Now,

4 = 360/Φ - 1

5 = 360/Φ

Φ = 360/5

Φ = 72°

HENCE THE ANGLE BETWEEN THE TWO MIRRORS IS 72°.

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