Question

In a glass prism

• A. green light is dispersed more than red light
• B. red light is dispersed more than green light
• C. both green and red light are equally dispersed
• D. None of the above

Answer 1

The Correct Option is A

Dispersion occurs because different colors of light (wavelengths) are refracted by different amounts when passing through a prism. The refractive index of the glass depends on the wavelength of light, with shorter wavelengths (e.g., violet and blue) being refracted more than longer wavelengths (e.g., red).

In the visible spectrum, green light has a shorter wavelength than red light. Since shorter wavelengths experience greater refraction, green light is dispersed more than red light in a glass prism.

Final Answer: The correct answer is $\mathbf{\text{(1) green light is dispersed more than red light}}$.