GD Pilot Physics MCQs

By: Prof. Dr. Fazal Rehman | Last updated: May 20, 2025

1. What is the unit of force in the SI system?
(A) Dyne
(B) Newton
(C) Joule
(D) Pascal

2. What does Bernoulli’s principle explain in aviation?
(A) The acceleration of gravity
(B) The lift force on a wing
(C) The conservation of energy in a circuit
(D) The torque on a propeller

3. What is the acceleration due to gravity on Earth?
(A) 9.8 m/s²
(B) 10 m/s²
(C) 8.9 m/s²
(D) 9.2 m/s²

4. Which law states that “Every action has an equal and opposite reaction”?
(A) Newton’s First Law
(B) Newton’s Second Law
(C) Newton’s Third Law
(D) Law of Universal Gravitation

5. Lift on an aircraft wing is primarily produced due to:
(A) Newton’s third law only
(B) Higher airspeed above the wing causing lower pressure
(C) Engine thrust
(D) Weight reduction

6. What is the escape velocity from Earth approximately?
(A) 11.2 km/s
(B) 8.9 km/s
(C) 7.5 km/s
(D) 15.4 km/s

7. A projectile follows which type of path?
(A) Circular
(B) Parabolic
(C) Elliptical
(D) Straight line

8. Which quantity is a vector?
(A) Speed
(B) Temperature
(C) Distance
(D) Velocity

9. Thrust is:
(A) A resistive force
(B) A lift force
(C) A forward force produced by the engine
(D) A downward force due to gravity

10. What happens to atmospheric pressure as altitude increases?
(A) It increases
(B) It remains constant
(C) It decreases
(D) It first increases then decreases