In the dispersion of white light by a common glass prism, which one among the following is correct?

  1. A. Red light deviates the most because red light has highest speed in prism
  2. B. Blue light deviates the most because blue light has highest speed in prism
  3. C. Red light deviates the most because red light has lowest speed in prism
  4. D. Blue light deviates the most because blue light has lowest speed in prism

Correct Answer: D. Blue light deviates the most because blue light has lowest speed in prism

Explanation

Blue light has a shorter wavelength and moves slower in a glass prism compared to red light, causing it to bend (deviate) the most.

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