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Physics MCQs

439 Questions
Subject Preparation Guide

Prepare Physics with confidence

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

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Medium css Uploaded: 17 Aug 2026

Doping a semiconductor involves:

  • A Cooling it to absolute zero
  • B Removing all impurities
  • C Adding impurities to alter its conductivity
  • D Heating it to extreme temperatures
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Hard css fpsc ppsc Uploaded: 13 Jul 2026

What is the angle of incidence when a ray of light undergoes total internal reflection?

  • A Less than the critical angle
  • B Equal to 90 degrees
  • C Greater than the critical angle
  • D Equal to 45 degrees
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Hard ppsc Uploaded: 06 Aug 2026

What is the speed of light in a vacuum approximately?

  • A 3 x 10^5 m/s
  • B 3 x 10^6 m/s
  • C 3 x 10^10 m/s
  • D 3 x 10^8 m/s
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Easy nts Uploaded: 17 Aug 2026

The time period of a satellite in a geostationary orbit is:

  • A 1 hour
  • B 48 hours
  • C 12 hours
  • D 24 hours
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Easy ppsc Uploaded: 06 Aug 2026

Which law describes the relationship between the pressure, volume, and temperature of an ideal gas?

  • A Boyle's Law
  • B Ideal Gas Law
  • C Charles's Law
  • D Dalton's Law
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A device used to store electric charge is called a:

  • A Inductor
  • B Transformer
  • C Capacitor
  • D Resistor
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Which phenomenon causes a spinning top to precess rather than fall over immediately?

  • A Conservation of energy
  • B Magnetic force
  • C Gyroscopic effect
  • D Centripetal force only
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Medium nts Uploaded: 06 Aug 2026

Which simple machine consists of a rod that pivots around a fixed point?

  • A Pulley
  • B Wedge
  • C Screw
  • D Lever
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The internal energy of an ideal gas depends only on its:

  • A Pressure
  • B Density
  • C Temperature
  • D Volume
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The atomic nucleus was discovered through experiments conducted by:

  • A J.J. Thomson
  • B Max Planck
  • C Niels Bohr
  • D Ernest Rutherford
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Medium fpsc ppsc nts Uploaded: 13 Jul 2026

What is the approximate speed of sound in air at room temperature?

  • A 343 m/s
  • B 150 m/s
  • C 1500 m/s
  • D 3000 m/s
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Medium css Uploaded: 17 Aug 2026

Potential energy due to height is given by the formula:

  • A mgh
  • B Fd
  • C mv
  • D (1/2)mv^2
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Hard css fpsc Uploaded: 05 Aug 2026

Which law states that energy radiated by a black body is proportional to the fourth power of its temperature?

  • A Stefan-Boltzmann Law
  • B Boltzmann's Law
  • C Wien's Law
  • D Newton's Cooling Law
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Medium css fpsc ppsc Uploaded: 13 Jul 2026

Which law states that planets move in elliptical orbits with the sun at one focus?

  • A Newton's Law of Gravitation
  • B Galileo's Law of Motion
  • C Kepler's First Law
  • D Hubble's Law
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Hard fpsc Uploaded: 06 Aug 2026

Which particle is responsible for carrying the electromagnetic force?

  • A Neutrino
  • B Boson
  • C Photon
  • D Gluon
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Easy css Uploaded: 06 Aug 2026

Which type of radioactive decay involves the emission of a helium nucleus?

  • A Beta decay
  • B Gamma decay
  • C Neutron emission
  • D Alpha decay
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Medium fpsc Uploaded: 17 Aug 2026

The focal length of a plane mirror is:

  • A Zero
  • B Infinite
  • C Equal to radius of curvature
  • D Negative
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Medium fpsc ppsc nts Uploaded: 13 Jul 2026

Which device stores electrical energy in an electric field between two conductors?

  • A Inductor
  • B Resistor
  • C Transformer
  • D Capacitor
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Easy ppsc Uploaded: 06 Aug 2026

Which quantity is measured in Hertz?

  • A Wavelength
  • B Amplitude
  • C Period
  • D Frequency
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Medium pms Uploaded: 17 Aug 2026

The first law of thermodynamics is a statement of conservation of:

  • A Charge
  • B Momentum
  • C Mass
  • D Energy