Question

Assertion (A): Tiny air molecules scatter blue light more than red light.

Reason (R): The refractive index of a medium is greater for blue light than red light.

Options

• (A) is true but (R) is false.

• (A) is false but (R) is true.

• Both (A) and (R) are true and (R) is the correct explanation of (A).

• Both (A) and (R) are true but (R) is not the correct explanation of (A).

Answer 1

Both (A) and (R) are true but (R) is not the correct explanation of (A).

Explanation:

The assertion is true as blue light possesses a shorter wavelength than red light, resulting in greater scattering by minute air molecules. The Reason is true as the refractive index of a medium is higher for blue light compared to red light. Scattering is mostly influenced by wavelength rather than refractive index. Therefore, both (A) and (R) are true, but (R) is not the correct explanation of (A).