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.Which of the following correctly identifies the three constituents of an atom, their respective masses and charges, and describes their distribution within an atom?
- A.Electrons (mass = 9.1 × 10⁻³¹ kg, charge = -1.6 × 10⁻¹⁹ C), protons (mass = 1.67 × 10⁻²⁷ kg, charge = +1.6 × 10⁻¹⁹ C), and neutrons (mass = 1.67 × 10⁻²⁷ kg, charge = 0). Protons and neutrons form the nucleus, while electrons revolve around it in orbits.
- B.Electrons (mass = 1.67 × 10⁻²⁷ kg, charge = 0), protons (mass = 9.1 × 10⁻³¹ kg, charge = -1.6 × 10⁻¹⁹ C), and neutrons (mass = 1.67 × 10⁻²⁷ kg, charge = +1.6 × 10⁻¹⁹ C). All three are evenly distributed throughout the atom.
- C.Electrons (mass = 9.1 × 10⁻³¹ kg, charge = +1.6 × 10⁻¹⁹ C), protons (mass = 1.67 × 10⁻²⁷ kg, charge = 0), and neutrons (mass = 1.67 × 10⁻²⁷ kg, charge = -1.6 × 10⁻¹⁹ C). Electrons form the nucleus, while protons and neutrons revolve around it.
- D.Electrons (mass = 1.67 × 10⁻²⁷ kg, charge = -1.6 × 10⁻¹⁹ C), protons (mass = 9.1 × 10⁻³¹ kg, charge = +1.6 × 10⁻¹⁹ C), and neutrons (mass = 0, charge = 0). Protons and electrons form the nucleus, while neutrons orbit around it.
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2.Which of the following correctly describes beta rays and gamma rays?
- A.Beta rays are electrons of nuclear origin; gamma rays are high-energy electromagnetic radiations
- B.Beta rays are protons; gamma rays are neutrons
- C.Beta rays are helium nuclei; gamma rays are X-rays
- D.Beta rays are positrons; gamma rays are alpha particles
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3.A radioactive element is placed in an evacuated chamber. Then the rate of radioactive decay will
- a.Decrease
- b.Increase
- c.Remain unchanged
- d.Depend on the surrounding temperature
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4.Gamma rays have frequency that of $X$-rays.
- a.equal to
- b.smaller than
- c.larger than
- d.none of these
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5.Calculate the energy released when 1 kg of mass is lost using Einstein's mass-energy equivalence relation.
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