Chapter-7 Pressure — Online MCQ Test
PHYSICS · Grade 10 · IGCSE cambridge
Practice Chapter-7 Pressure with a free chapter-wise online MCQ test.
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.
Chapter-7 Pressure — Important Questions & Answers
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).
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.
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.
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).
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.
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.