Question

Statement 1: When white light ray passes through a prism it disperses into seven different colours, and this phenomenon is called dispersion.

Statement 2: Refraction depends upon the wavelength of light and since different colours have different wavelengths, they are refracted at different angles and so they are split into the colour spectrum.

• A. Statement 1 and 2 are correct but statement 2 is not the correct reason of statement 1.
• B. Statement 1 and 2 are correct and statement 2 is the correct reason for statement 1.
• C. Both statements are wrong.
• D. Statement 1 is correct but statement 2 is incorrect.

Answer 1

The correct option is B

Statement 1 and 2 are correct and statement 2 is the correct reason for statement 1.

Refraction depends upon the wavelength of light and since different colours have different wavelengths, they are refracted at different angles due to which they split into the colour spectrum.