ICSE Class 10 Wave Optics — Mock Test (2027)
Free online mock test for Wave Optics (ICSE Class 10 Physics) — 80 competency-based questions based on the latest CISCE 2027 syllabus, with instant marking. Try the samples below, then take the full test free.
What to expect: This mock test covers key concepts from the Wave Optics chapter — including application-based and competency-focused questions aligned with how ICSE actually sets the paper.
Tip: Attempt without notes first to identify gaps, then review explanations for any wrong answers. Retake after a few days for best retention.
Sample questions
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1.Assertion (A): When light enters a denser medium, its frequency remains unchanged. Reason (R): On entering a denser medium the speed and wavelength of light both decrease.
- A.Both A and R are true and R is the correct explanation of A
- B.Both A and R are true but R is NOT the correct explanation of A
- C.A is true but R is false
- D.A is false but R is true
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2.In a Young's double-slit setup the fringe width is beta. If the slit separation d is doubled while D and lambda are unchanged, the new fringe width is:
- A.beta/2
- B.2 beta
- C.beta
- D.4 beta
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3.In single-slit diffraction by a slit of width a, the minima (zero intensity) occur at angles theta given by:
- A.theta = n lambda / a, n = 1, 2, 3, ...
- B.theta = (n + 1/2) lambda / a
- C.theta = n a / lambda
- D.theta = lambda / (n a)
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4.Using Huygens principle for refraction, the ratio sin i / sin r equals:
- A.v1 / v2
- B.v2 / v1
- C.v1 v2
- D.v1 + v2
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5.A plane wavefront travels from a rarer to a denser medium. Which set of changes correctly describes the wave?
- A.Wavelength decreases, speed decreases, frequency unchanged
- B.Wavelength increases, speed decreases, frequency increases
- C.Wavelength unchanged, speed increases, frequency decreases
- D.All three increase
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