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: Which wave has the longest wavelength?
A) Infrared
B) Radio
C) Microwave
D) Gamma
✅ Correct Answer: B
Explanation: Radio waves have the longest wavelengths in the EM spectrum.
Q: Which gas is used in fluorescent lamps?
A) Argon
B) Mercury vapor
C) Oxygen
D) Nitrogen
✅ Correct Answer: B
Explanation: Mercury vapor emits UV light in fluorescent tubes.
Q: One horsepower is equal to how many watts?
A) 746
B) 500
C) 620
D) 1000
✅ Correct Answer: A
Explanation: 1 HP = 746 watts of power.
Q: What is the term for rate of doing work?
A) Momentum
B) Efficiency
C) Power
D) Energy
✅ Correct Answer: C
Explanation: Power = Work / Time.
Q: Which of the following quantities is conserved in all collisions?
A) Momentum
B) Speed
C) Distance
D) Acceleration
✅ Correct Answer: A
Explanation: Law of conservation of momentum applies in all collisions.