Question:medium

\( V_V, V_R, V_G \) are the velocities of violet, red, and green light respectively, in a glass prism. Which among the following is a correct relation?

Show Hint

In a glass prism, the velocity of light decreases with the decrease in wavelength. The shorter the wavelength, the slower the light travels.
Updated On: Jan 15, 2026
  • \( V_V < V_R < V_G \)
  • \( V_V = V_R = V_G \)
  • \( V_V < V_G < V_R \)
  • \( V_V > V_R > V_G \)
Show Solution

The Correct Option is A

Solution and Explanation

\nWithin a glass prism, light components of varying wavelengths exhibit different speeds. Violet light, characterized by the shortest wavelength, propagates slowest, succeeded by red and then green light. Consequently, the velocity of violet light \( V_V \) is less than the velocity of red light \( V_R \), which is less than the velocity of green light \( V_G \). Thus, the correct relationship is \( V_V <V_R < V_G \).
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