CBSE Class 10 Science sample paper 2026-27: question 32
From the official CBSE sample question paper for 2026-27, section C, question 32, for 1 mark. Try it first; the hints and our step-by-step solution are below.
Q32 · 1 mark · Assertion-reasonCompetency-basedLight – Reflection and Refraction
Assertion (A): The apparent depth of a coin in water is less than its real depth. Reason (R): Light bends away from the normal when it travels from water to air.
- (A)Both A and R are true, and R is the correct explanation of A.
- (B)Both A and R are true, and R is not the correct explanation of A.
- (C)A is true but R is false.
- (D)A is false but R is true.
Source: official sample paper from cbseacademic.nic.in (PDF). See it in the full Sample paper 2026-27.
Hints
Open one hint at a time and try again before the next.
Hint 1
Which way does light bend when it goes from a denser to a rarer medium?
Hint 2
When the refracted rays are traced back, where do they appear to come from?
Step-by-step solution
Each step shows the marks it earns, as an examiner would award them. Checked by an independent re-solve from the question paper.
- ½ mark
Assertion A is true: a coin in water appears raised, so its apparent depth is less than its real depth.
- ½ mark
Reason R is true: light from the coin bends away from the normal as it passes from water (denser) into air (rarer). The refracted rays seem to come from a higher point, which is exactly why the coin looks raised. So R explains A. Answer: (A).
Answer: Option (A)
Where the marks are
- Judges both A and R true, with R the correct explanation of A (1 mark)
Revise the chapter
- Chapter: Light – Reflection and Refraction (notes, formulas, where marks are lost and every past question)
- Topic: Refraction of Light and Refractive Index
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