Question:
When a beam of white light falls on the surface of a triangular glass prism it splits, after emerging out from the prism into various colours with different deviations. The colour which has minimum deviation is
When a beam of white light falls on the surface of a triangular glass prism it splits, after emerging out from the prism into various colours with different deviations. The colour which has minimum deviation is
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The deviation of light in a prism depends on its wavelength. Red light, having the longest wavelength, experiences the least deviation.
Updated On: Nov 5, 2025
- Yellow
- Green
- Violet
- Red
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The Correct Option is D
Solution and Explanation
When white light passes through a prism, it undergoes dispersion, splitting into its constituent colors. The deviation of light depends on its wavelength; longer wavelengths deviate less. Among visible colors, red has the longest wavelength and, therefore, the least deviation.
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