Chapter Exam

Chapter-7 Pressure — Online MCQ Test

Q: Pressure is defined as force per unit area. Which of the following is the SI unit of pressure?

Answer: A. Pascal (Pa) — Pascal is the SI unit of pressure, defined as 1 Newton per square metre (N/m²).

Q: A force of 500 N is applied over an area of 2 m². What is the pressure exerted?

Answer: A. 250 Pa — Pressure = Force / Area = 500 N / 2 m² = 250 Pa.

Q: The pressure at a depth h in a liquid is given by the formula P = ρgh. What does the symbol ρ represent?

Answer: B. Density of the liquid — In the pressure formula P = ρgh, ρ represents the density of the liquid, g is gravitational acceleration, and h is the depth.

Q: A water tank has a height of 10 m. What is the pressure at the bottom of the tank? (Density of water = 1000 kg/m³, g = 10 m/s²)

Answer: C. 100,000 Pa — Pressure at depth = ρgh = 1000 × 10 × 10 = 100,000 Pa (ignoring atmospheric pressure).

PHYSICS · Grade 10 · IGCSE cambridge

Practice Chapter-7 Pressure with a free chapter-wise online MCQ test for IGCSE cambridge Grade 10 PHYSICS. This chapter covers: Pressure in solids and fluids and how pressure changes with depth in liquids.. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter-7 Pressure — Important Questions & Answers (FAQ)

Frequently asked questions from IGCSE cambridge Grade 10 PHYSICS — Chapter-7 Pressure, with answers and explanations. These are sample questions; the exam has its own separate question set.

Pressure is defined as force per unit area. Which of the following is the SI unit of pressure?

A. Pascal (Pa) ✓
B. Newton (N)
C. Joule (J)
D. Watt (W)

Answer: A. Pascal (Pa)
Pascal is the SI unit of pressure, defined as 1 Newton per square metre (N/m²).

A force of 500 N is applied over an area of 2 m². What is the pressure exerted?

A. 250 Pa ✓
B. 1000 Pa
C. 2.5 Pa
D. 0.004 Pa

Answer: A. 250 Pa
Pressure = Force / Area = 500 N / 2 m² = 250 Pa.

The pressure at a depth h in a liquid is given by the formula P = ρgh. What does the symbol ρ represent?

A. Pressure
B. Density of the liquid ✓
C. Depth of the liquid
D. Gravitational acceleration

Answer: B. Density of the liquid
In the pressure formula P = ρgh, ρ represents the density of the liquid, g is gravitational acceleration, and h is the depth.

A water tank has a height of 10 m. What is the pressure at the bottom of the tank? (Density of water = 1000 kg/m³, g = 10 m/s²)

A. 10,000 Pa
B. 50,000 Pa
C. 100,000 Pa ✓
D. 1,000,000 Pa

Answer: C. 100,000 Pa
Pressure at depth = ρgh = 1000 × 10 × 10 = 100,000 Pa (ignoring atmospheric pressure).

A gas and a liquid are compared at the same temperature and volume. Which statement is most accurate regarding their pressure characteristics?

A. Both exert equal pressure in all directions
B. Gas pressure is independent of container shape; liquid pressure depends on depth but not container shape ✓
C. Liquid pressure depends solely on surface area; gas pressure depends on volume
D. Gas pressure is uniform throughout; liquid pressure varies with depth and direction

Answer: B. Gas pressure is independent of container shape; liquid pressure depends on depth but not container shape
Gas pressure is uniform throughout a container regardless of shape. Liquid pressure varies with depth (P = P₀ + ρgh) but at a given depth is independent of container shape.

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