ICSE 2023 Physics Question Paper for Class 10

About this paper

This is the ICSE Class 10 Physics question paper, Science Paper 1, from the 2023 examination, code T23 521. It is marked out of 80, with two hours to write after 15 minutes of reading. Section A (40 marks) is compulsory. Question 1 has 15 multiple-choice items, and Questions 2 and 3 are short answers on pulleys, centre of gravity, a geyser rated 240 W and 220 V, and radioactivity. Section B (40 marks) has Questions 4 to 9, of which any four are to be attempted, covering a prism, a convex lens, a block and tackle of velocity ratio 4, SONAR, specific resistance and calorimetry. Answers are to be written on a separate sheet. This copy has the questions only.

Exam

ICSE Class 10

Subject

Physics

Year

2023

Paper code

T23 521

Maximum marks

80

Time allowed

2 hours + 15 min reading

Questions

9

Pages

11

Answers included

No, questions only

Paper pattern

• Section A – Question 1

  15 marks

  15 multiple-choice questions, one mark each

• Section A – Questions 2 and 3

  25 marks

  Short answers on machines, work, sound, household electricity, heat and radioactivity

• Section B

  40 marks

  Questions 4–9, attempt any four; each has parts of three, three and four marks

Topics covered

• Moments, centre of gravity and equilibrium
• Work, energy and power
• Machines and the block and tackle
• Refraction, prisms and lenses
• Sound, resonance and SONAR
• Current electricity and household wiring
• Electromagnetism
• Heat capacity and calorimetry
• Radioactivity and the nucleus

Questions from this paper

1. When does the nucleus of an atom tend to become radioactive?
2. A geyser is rated 240 W, 220 V. Explain the meaning of this statement.
3. A convex lens of focal length 10 cm is placed 60 cm from a screen. How far from the lens should an object be placed so as to obtain a real image on the screen?
4. A coin kept in water of refractive index 4/3, viewed vertically from air, appears raised by 3.0 mm. Find the depth of the coin in water.
5. Calculate the heat energy required to convert 200 g of ice at 0°C into water at 100°C. Specific latent heat of ice = 336 J g⁻¹ and specific heat capacity of water = 4.2 J g⁻¹ °C⁻¹.
6. A car of mass 120 kg speeds up from 18 km/h to 54 km/h in 5 seconds. Calculate the work done by the engine and the power of the engine.