Q1. [1]
Assertion (A) : When rays of white light pass through a prism, on emerging they give spectrum of seven colours.
Reason (R) : It is due to the scattering of light that red light bends minimum and violet light bends the maximum.
- A Both, Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
- B Both, Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
- C Assertion (A) is true, but Reason (R) is false.
- D Assertion (A) is false, but Reason (R) is true.
Previously asked in CBSE board exam
2026 31/1/1 Q32
Generated by claude-sonnet-4-6 · 2026-06-15 06:50 · grounding rag
Model Answer
Answer: C
Assertion (A) is true, but Reason (R) is false. The spectrum is produced due to dispersion (different colours bend by different angles through refraction), not scattering. Red bends least and violet bends most because of dispersion by the prism.
Explanation
- The Assertion is correct — white light splits into VIBGYOR on passing through a prism.
- The Reason is false because the cause is dispersion of light (different refractive indices for different colours), NOT scattering. Scattering explains phenomena like the blue sky, not the prism spectrum. Since the Reason is false, option C is correct.
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