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.What is meant by the deviation produced by a prism, and why is it caused? Additionally, which of the following sets correctly identifies the three factors on which the angle of deviation depends?
- A.The deviation is the bending of light due to reflection at the prism surfaces. It depends on the angle of incidence, the color of the prism, and the size of the prism.
- B.The deviation is the bending of light from its original path due to refraction at the two refracting surfaces. It depends on the angle of incidence, the refractive index of the prism material, and the refracting angle of the prism.
- C.The deviation is the scattering of light inside the prism. It depends on the thickness of the prism, the wavelength of light, and the angle of emergence.
- D.The deviation is the absorption of light by the prism. It depends on the transparency of the prism, the angle of refraction, and the density of the prism material.
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2.13. The deviation produced by an equilateral prism does not depend on the
- A.angle of incidence
- B.size of the prism
- C.material of the prism
- D.colour of light used
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3.In the diagram below, identify the label that corresponds to the **concavo-convex lens**:
The lens shapes shown are:
1. Both surfaces convex
2. One surface plane, the other convex
3. One surface convex, the other concave, but thicker in the middle- A.Label 1
- B.Label 2
- C.Label 3
- D.None of the labels
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4.40. The invisible spectrum beyond red of visible spectrum is called ... spectrum.
- A.Ultraviolet
- B.Yellow
- C.Green
- D.Infrared
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5.Derive the relationship between the wavelength of light in air ($$\lambda$$) and in a medium ($$\lambda'$$) given the refractive index ($$\mu$$) of the medium. Which of the following correctly expresses this relationship?
- A.$$\lambda' = \mu \lambda$$
- B.$$\lambda' = \frac{\lambda}{\mu}$$
- C.$$\lambda' = \lambda \mu^2$$
- D.$$\lambda' = \lambda + \frac{1}{\mu}$$
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