alleryA concave mirror focusing sunlight on paper makes the paper:
ABend
BBulge
CBlur
DBurn
Answer & Solution
Correct answer: D. Burn
1. The rays converge to a bright sharp spot.
2. Heat concentrates at that point.
3. The paper begins to burn.
_Source: syllabus Science, Ch 10 'Light - Reflection and Refraction'_
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