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Statement-1: When the clear blue sky is viewed through a calcite crystal, the intensity of the transmitted light changes as the crystal is rotated. Statement-2: Sky light is polarized because sunlight is scattered by atmospheric particles, and this scattering is strongest for blue light. Choose the correct option about the two statements.

1. Statement-1 is false, statement-2 is true
2. Statement-1 is true, statement-2 is false
3. Statement-1 is true, statement-2 is true; statement-2 is the correct explanation of statement-1
4. Statement-1 is true, statement-2 is true; statement-2 is not the correct explanation of statement-1

Correct answer: Statement-1 is true, statement-2 is true; statement-2 is the correct explanation of statement-1

Solution

Both statements are true: sky light is polarized by scattering, and that polarization is exactly why a rotating calcite crystal shows changing intensity. So Statement-2 correctly explains Statement-1.

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