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.The half-life of strontium-90 is 29 years. The table gives some information about how the mass of a sample of strontium-90 changes with time.
Complete the table.Mass of strontium-90 in g Time in years 1600 0 ………………… 29 400 ………………… -
2.What is the term for the collection of thermionic electrons near the cathode that prevents further electron emission?
- A.Space charge
- B.Anode cloud
- C.Cathode shield
- D.Electron barrier
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3.Which equations correctly represent the changes in proton number (Z) and mass number (A) of a parent nucleus after alpha and beta decay?
- A.α-decay: Z decreases by 2, A decreases by 4; β-decay: Z increases by 1, A unchanged
- B.α-decay: Z decreases by 4, A decreases by 2; β-decay: Z unchanged, A increases by 1
- C.α-decay: Z unchanged, A decreases by 4; β-decay: Z increases by 1, A decreases by 1
- D.α-decay: Z decreases by 2, A unchanged; β-decay: Z increases by 1, A decreases by 4
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4.What are radioisotopes? Which of the following correctly describes a radioisotope, provides a valid example, and states one of its uses?
- A.Isotopes of an element that are radioactive, e.g., Carbon-14, used in carbon dating or medical imaging.
- B.Stable isotopes of an element, e.g., Oxygen-16, used in industrial measurements.
- C.Elements that emit light, e.g., Uranium, used in nuclear reactors only.
- D.Isotopes with extra protons, e.g., Hydrogen-3, used exclusively in scientific research.
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5.What is the specific charge of an alpha particle, given its mass is 6.68 × 10⁻²⁷ kg and its charge is +3.2 × 10⁻¹⁹ C?
- A.4.79 × 10⁷ C kg⁻¹
- B.2.40 × 10⁷ C kg⁻¹
- C.9.58 × 10⁷ C kg⁻¹
- D.4.79 × 10⁻⁷ C kg⁻¹
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