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KVPY2020PhysicsWave Optics

Which is the following colourful patterns is due to diffraction of light?

Options

  1. ARainbow
  2. BWhite light dispersed using a prism
  3. CColours observed on compact disc
  4. DBlue colour of sky

Correct answer

C. Colours observed on compact disc

Step-by-step solution

(A) Rainbow occurs because of refraction, reflection & dispersion of light. (B) Dispersion (C) Due to presence of concentric grooves in compact disc, light gets diffracted & produced colorful pattern. (D) Due to scattering of blue color.

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