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A: Coloured spectrum is seen when we look through a cloth R: Diffraction of light takes place when light is travelling through the pores of cloth

1. Both A and R are true, and R is not correct explanation of A
2. Both A and R are true, and R is correct explanation of A
3. A is true but R is false
4. A is false but R is true

Correct answer: Both A and R are true, and R is correct explanation of A

Solution

Both statements are true: a cloth can produce a coloured spectrum when light passes through its fine pores. The pores cause diffraction, and diffraction separates light into different directions/wavelengths, which explains the spectrum.

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