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Most Important Selected Qs for JEE AdvancedPhysicsRay Optics

An object O is kept at (3 2 L, 2 L) . Two plane mirrors M₁ and M₂ each of length 4 L are kept as shown in the figure. n is the number of images of O , formed due to the combination of mirrors.

Options

  1. An is independent of d
  2. Bn cannot be greater than 7 for any value of d
  3. Cn=7 for all d 4 2 L
  4. Dn=2 for d 4 2 L

Correct answer

D. n=2 for d 4 2 L

Step-by-step solution

n_ = 360 45 -1=7 At d=4 2 ray first falling on M₂ will not go M₁ after reflection and vice versa. Hence n=2 d 4 2 L

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