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COMEDK2018PhysicsWave Optics

An unpolarised beam of intensity I₀ falls on a polaroi(d)The intensity of the emergent light is

Options

  1. AI₀ / 2
  2. BI₀
  3. CI₀ / 4
  4. DZero

Correct answer

A. I₀ / 2

Step-by-step solution

When an unpolarised beam of intensity I₀ falls on a polaroid, then after polarisation, the intensity of the emergent beam of light becomes I₀ 2 .

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