ICSE Class 10 Modern Physics — Mock Test (2027)
Free online mock test for Modern Physics (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 Modern Physics 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 radioactive sample is kept at the centre of a large evacuated sphere. How safe is this setup?
- A.Very safe, as all radiations are absorbed by the sphere
- B.Not very safe, as beta and gamma radiations will escape
- C.Safe only if the sphere is made of lead
- D.Safe, as alpha particles are the only concern
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2.The electron ejected in the photoelectric effect comes from:
- A.the outermost orbit of atom
- B.the inner orbits of atom
- C.the surface of substance
- D.the nucleus of atom
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3.Which of the following correctly states two similarities and two dissimilarities between γ-rays and X-rays?
- A.Similarities: Both are electromagnetic waves and travel at the speed of light. Dissimilarities: γ-rays have shorter wavelength and are more penetrating than X-rays.
- B.Similarities: Both are sound waves and travel at the speed of light. Dissimilarities: γ-rays have longer wavelength and are less penetrating than X-rays.
- C.Similarities: Both are electromagnetic waves and have the same wavelength. Dissimilarities: γ-rays travel faster and are less penetrating than X-rays.
- D.Similarities: Both are mechanical waves and travel at 3 × 10⁸ m/s. Dissimilarities: γ-rays have shorter wavelength and are less penetrating than X-rays.
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4.A thorium isotope ${}^{223}\mathrm{Th}$ undergoes an α-decay and changes into radium. What are the atomic number and mass number of the radium produced?
- A.Atomic number 88, mass number 219
- B.Atomic number 90, mass number 223
- C.Atomic number 86, mass number 215
- D.Atomic number 92, mass number 227
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5.Can a hydrogen atom isotope emit an alpha particle? Select the most accurate explanation.
- A.No, hydrogen isotopes lack sufficient protons and neutrons to form an alpha particle
- B.Yes, tritium can emit an alpha particle due to its extra neutrons
- C.No, hydrogen isotopes can only emit beta particles, not alpha particles
- D.Yes, all isotopes of hydrogen can emit alpha particles under high energy
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