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MHT CET202123 Sep 2021Evening ShiftPhysicsRay OpticsActual

A ray of light travels from air to water to glass and again from glass to air. Refractive index of water w.r.t. air is ' X ', glass w.r.t. water is ' Y and air w.r.t. glass is ' Z '. Which one of the following is correct?

Options

  1. AY Z=X
  2. BX Y Z=1
  3. CX Y=Z
  4. DX Z=Y

Correct answer

B. X Y Z=1

Step-by-step solution

aligned & X= v_a v_w , Y= v_w v_g , Z= v_g v_a & X Y Z=1 aligned

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