Question

When light is dispersed by a prism, the colour least dispersed is a. Violet b. Indigo c. Yellow d. Red​

Answer 1

Answer: A. Violet

Explanation:

Answer 2

• d is the correct answer red
• Light with longer wavelengths scatters and disperses less.
• When white light is dispersed through a prism, the red colour deviates the least, while the violet colour deviates the most.
• dispersion, as well as many other phenomena, is caused by refraction.
• As we learned in The Law of Refraction, the refraction angle is determined by the index of refraction.
• The index of refraction, n, is known to be medium dependent. However, the wavelength of a medium affects n.