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: Device that converts AC to DC?
A) Capacitor
B) Inductor
C) Transformer
D) Rectifier
✅ Correct Answer: D
Explanation: Rectifier converts alternating current to direct current.
Q: What is the nature of sound wave in air?
A) Both B and C
B) Transverse
C) Mechanical
D) Longitudinal
✅ Correct Answer: A
Explanation: Sound in air is a longitudinal mechanical wave.
Q: Magnetic field inside a long current-carrying solenoid is?
A) Circular
B) Irregular
C) Zero
D) Uniform
✅ Correct Answer: D
Explanation: Magnetic field inside an ideal solenoid is uniform.
Q: A fuse wire is made of?
A) Nichrome
B) Copper
C) Iron
D) Lead-tin alloy
✅ Correct Answer: D
Explanation: Fuse wires use low melting point alloys like lead-tin.
Q: A device that opposes change in current?
A) Resistor
B) Capacitor
C) Transformer
D) Inductor
✅ Correct Answer: D
Explanation: Inductors resist sudden changes in current.