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Physics MCQs

159 Questions Subject Test
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Practice core concepts of measurement, motion, force, energy, waves, electricity, magnetism and modern physics.

MechanicsWavesElectricityModern Physics
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101
Medium ppsc Uploaded: 06 Aug 2026

Which principle explains how airplanes generate lift?

  • A Bernoulli's Principle
  • B Pascal's Principle
  • C Archimedes' Principle
  • D Newton's First Law
102
Medium css fpsc ppsc Uploaded: 13 Jul 2026

Which formula correctly represents the relationship between frequency wavelength and speed of a wave?

  • A v equals f divided by wavelength
  • B v equals wavelength divided by f
  • C v equals f times wavelength
  • D f equals v times wavelength
103
Medium ppsc Uploaded: 17 Aug 2026

A scalar quantity has:

  • A Only magnitude
  • B Both magnitude and direction
  • C Neither magnitude nor direction
  • D Only direction
104
Hard css fpsc ppsc Uploaded: 13 Jul 2026

What is the phenomenon of resonance in physics?

  • A Increase in amplitude when driving frequency matches natural frequency
  • B Decrease in amplitude of oscillations over time
  • C The bending of waves around obstacles
  • D Splitting of white light into colours
105
Medium css fpsc ppsc Uploaded: 13 Jul 2026

Which type of nuclear reaction splits a heavy nucleus into smaller nuclei releasing large amounts of energy?

  • A Nuclear fusion
  • B Radioactive decay
  • C Nuclear fission
  • D Beta decay
106
Hard ppsc Uploaded: 17 Aug 2026

A body floats in a liquid when its weight is:

  • A Less than the buoyant force
  • B Independent of buoyant force
  • C Greater than the buoyant force
  • D Equal to the buoyant force
107
Easy ppsc Uploaded: 17 Aug 2026

Like charges:

  • A Repel each other
  • B Neutralize each other
  • C Attract each other
  • D Have no interaction
108
Easy ppsc Uploaded: 06 Aug 2026

Which type of circuit provides multiple paths for current to flow?

  • A Series circuit
  • B Open circuit
  • C Short circuit
  • D Parallel circuit
109
Medium ppsc Uploaded: 17 Aug 2026

Echo is caused by the:

  • A Refraction of sound
  • B Diffraction of sound
  • C Interference of sound
  • D Reflection of sound
110
Medium css fpsc ppsc Uploaded: 13 Jul 2026

Which law of thermodynamics states that energy cannot be created or destroyed only converted from one form to another?

  • A Zeroth Law
  • B Second Law
  • C Third Law
  • D First Law
111
Medium ppsc Uploaded: 06 Aug 2026

What is the term for the energy carried by a photon proportional to its frequency?

  • A Kinetic energy
  • B Potential energy
  • C Photon energy
  • D Binding energy
112
Medium css fpsc ppsc Uploaded: 13 Jul 2026

Which model of the atom describes electrons orbiting the nucleus in specific energy levels?

  • A Thomson's Plum Pudding model
  • B Rutherford's model
  • C Dalton's model
  • D Bohr's atomic model
113
Medium fpsc ppsc nts Uploaded: 13 Jul 2026

What is meant by the term inertia in physics?

  • A The tendency of an object to resist changes in its state of motion
  • B The tendency of an object to accelerate
  • C The force of gravity on an object
  • D The energy stored in a moving object
114
Easy ppsc Uploaded: 06 Aug 2026

What is the unit of frequency?

  • A Hertz
  • B Joule
  • C Watt
  • D Newton
115
Medium ppsc Uploaded: 17 Aug 2026

The speed of sound in air at room temperature is approximately:

  • A 343 m/s
  • B 5000 m/s
  • C 3 x 10^8 m/s
  • D 1500 m/s
116
Medium fpsc ppsc nts Uploaded: 13 Jul 2026

Which device converts electrical energy into mechanical energy?

  • A Generator
  • B Transformer
  • C Electric motor
  • D Capacitor
117
Medium fpsc ppsc nts Uploaded: 13 Jul 2026

Which type of wave does not require a medium to travel?

  • A Sound wave
  • B Water wave
  • C Seismic wave
  • D Electromagnetic wave
118
Medium fpsc ppsc nts Uploaded: 05 Aug 2026

Which device converts light energy directly into electrical energy using the photovoltaic effect?

  • A Generator
  • B Transformer
  • C Solar cell
  • D Battery
119
Medium css fpsc ppsc Uploaded: 13 Jul 2026

What is the centripetal force?

  • A Force pushing an object outward in circular motion
  • B Force causing linear acceleration
  • C Force equal to mass times velocity
  • D Force directed toward the centre of circular motion
120
Easy ppsc Uploaded: 17 Aug 2026

The working principle of an optical fiber is based on:

  • A Polarization
  • B Refraction
  • C Diffraction
  • D Total internal reflection
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