Number of images of an object kept symmetrically between two mirrors inclined at angle 72 would be

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An object is placed (i) asymmetrically (ii) symmetrically, between two plane mirrors inclined at an angle of 50°. Find the number of images formed.

Angle between the mirrors, θ = 50o

Now, n = 360o / θo = 360o / 50o = 7.2 7, which is odd.

(i) When placed asymmetrically, number of images formed will be n, i.e. 7.

(ii) When placed symmetrically, number of images formed will be (n-1); i.e. 7-1 = 6 images

Concept: Images Formed by a Plane Mirrors

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