Question

The splitting of white light into its constituent colours by a triangular prism is called ________ .

• A. Dispersion
• B. Reflection
• C. Refraction
• D. Scattering

Answer 1

Answer: (A)

The white light is separated into its component colors - red, orange, yellow, green, blue, indigo and violet. The separation of visible light into its different colors is known as dispersion. On passing through the prism, each colour of light ray is refracted by a different amount and hence, white light is split into its component colours.