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ScienceCBSE Class 10 · Sample paper, session 2026-27 · 1 mark · Assertion-reason

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.

  1. (A)Both A and R are true, and R is the correct explanation of A.
  2. (B)Both A and R are true, and R is not the correct explanation of A.
  3. (C)A is true but R is false.
  4. (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.

  1. Assertion A is true: a coin in water appears raised, so its apparent depth is less than its real depth.

    ½ mark
  2. 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).

    ½ mark

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

The question is transcribed from the official paper; figures are described in words. The solution, hints and chapter tag are ours. Spotted an error? Write tosupport@questionbuddy.in.