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Science · 2024 · 2 marks
CBSE 2024 · Region 5 · Set 1 · Q25
The heat produced at a point due to concentration of sunlight by a convex lens burns a paper.(a)Explain why it happens.(b)Name the term (in the context of the lens used) given to the point at which the paper starts burning. What does the bright spot formed on the paper represent?
The heat produced at a point due to concentration of sunlight by a convex lens burns a paper.
(a)
Explain why it happens.
(b)
Name the term (in the context of the lens used) given to the point at which the paper starts burning. What does the bright spot formed on the paper represent?
Marking-scheme solution
(a) The sun light is converged at a point by convex lens which generates heat causing the paper to burn.
(b) •Principal Focus
-Real image of the Sun.
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CBSE Class 10 Science past-paper question from the 2024board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.