In the dispersion of white light by a common glass prism, which one among the following is correct?
- A. Red light deviates the most because red light has highest speed in prism
- B. Blue light deviates the most because blue light has highest speed in prism
- C. Red light deviates the most because red light has lowest speed in prism
- 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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