Question

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

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Answer

(i) When an object is placed asymmetrically between two plane mirrors inclined at an angle of 50° to each other then

n = 360º\over 50º = 7.2 ≈ 7

(ii) The number of images formed when the object is placed symmetrically is n-1,

Hence,

7 – 1 = 6.

Therefore, 6 images will be formed when the object is placed symmetrically, between two plane mirrors inclined at an angle of 50°.

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