Physics MCQs
Physics MCQs cover mechanics, thermodynamics, electromagnetism, optics, waves, nuclear, and modern physics. Perfect for CSS, PMS, FPSC, NTS, and university exams, they enhance conceptual understanding and problem-solving skills for academic and job success.
Q: Speed of light in vacuum?
A) 3 × 10^6 m/s
B) 3 × 10^8 m/s
C) 1.5 × 10^6 m/s
D) 1.5 × 10^8 m/s
✅ Correct Answer: B
Explanation: Light travels at approximately 300,000,000 meters per second in a vacuum.
Q: SI unit of force?
A) Pascal
B) Watt
C) Newton
D) Joule
✅ Correct Answer: C
Explanation: Newton is the SI unit used to measure force.
Q: Energy stored in a stretched spring?
A) Gravitational energy
B) Elastic potential energy
C) Thermal energy
D) Kinetic energy
✅ Correct Answer: B
Explanation: A stretched spring stores elastic potential energy.
Q: Function of a fuse in a circuit?
A) Break circuit in overload
B) Store charge
C) Increase voltage
D) Reduce current
✅ Correct Answer: A
Explanation: A fuse protects devices by breaking the circuit if the current exceeds a safe level.
Q: Acceleration due to gravity on Earth?
A) 12 m/s²
B) 10.5 m/s²
C) 8.9 m/s²
D) 9.8 m/s²
✅ Correct Answer: D
Explanation: The standard acceleration due to gravity on Earth is 9.8 m/s².