ICSE Class 10 Light — Mock Test (2027)
Free online mock test for Light (ICSE Class 10 Physics) — 20 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 Light 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.A ray of light is incident obliquely on one face of a rectangular glass slab of uniform thickness.
Which statement about the emergent ray and angles is correct?- A.The emergent ray is parallel to the incident ray, and the angle of incidence equals the angle of emergence.
- B.The emergent ray is perpendicular to the incident ray, and the angles are complementary.
- C.The emergent ray diverges from the incident ray, and the angle of refraction equals the angle of emergence.
- D.The emergent ray is parallel to the incident ray, but the angle of incidence is twice the angle of emergence.
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2.Copy the figure and complete it to show the formation of the image of the object AB. The lens used in the figure is:
- A.Convex lens forming a real, inverted image
- B.Concave lens forming a virtual, erect, diminished image
- C.Plane mirror forming a virtual, erect image
- D.Convex mirror forming a virtual, diminished image
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3.When a ray of light enters into another optical medium, its wavelength and velocity change. The material in which wavelength and velocity decrease maximum, when the ray is travelling through air is:
- A.glass
- B.water
- C.alcohol
- D.diamond
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4.Calculate the refractive index of water with respect to glass given the speed of light in glass is $2.0 \times 10^8 \, \text{m s}^{-1}$ and in water is $2.25 \times 10^8 \, \text{m s}^{-1}$.
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5.How does the deviation produced by a triangular prism vary with the colours (or wavelengths) of light incident on it?
- A.Deviation increases as the wavelength of light increases.
- B.Deviation decreases as the wavelength of light decreases.
- C.Deviation is greatest for violet light and least for red light.
- D.All colours of light experience the same deviation.
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