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Physics MCQs

439 Questions
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Medium fpsc ppsc nts Uploaded: 13 Jul 2026

Which law states that the pressure of a gas is inversely proportional to its volume at constant temperature?

  • A Boyle's Law
  • B Charles's Law
  • C Avogadro's Law
  • D Gay-Lussac's Law
422
Medium fpsc Uploaded: 06 Aug 2026

What is the term for a substance that does not allow heat or electricity to pass through it easily?

  • A Conductor
  • B Insulator
  • C Semiconductor
  • D Superconductor
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Medium css Uploaded: 17 Aug 2026

The unit used to measure the loudness of sound is:

  • A Decibel
  • B Hertz
  • C Watt
  • D Newton
424
Easy nts Uploaded: 17 Aug 2026

The process by which two light nuclei combine to form a heavier nucleus is called:

  • A Nuclear fission
  • B Nuclear fusion
  • C Alpha decay
  • D Radioactive decay
425
Medium css fpsc ppsc Uploaded: 13 Jul 2026

Which law of thermodynamics states that heat naturally flows from a hotter body to a cooler body?

  • A First Law
  • B Zeroth Law
  • C Second Law
  • D Third Law
426
Easy ppsc Uploaded: 17 Aug 2026

The work-energy theorem states that the work done on a body equals its:

  • A Change in momentum
  • B Change in potential energy
  • C Change in kinetic energy
  • D Total mechanical energy
427
Medium css fpsc ppsc Uploaded: 05 Aug 2026

Which kinetic theory explains that gas pressure results from molecular collisions with container walls?

  • A Boyle's Law
  • B Avogadro's Law
  • C Charles's Law
  • D Kinetic molecular theory
428
Hard nts Uploaded: 06 Aug 2026

What is the term for the total internal reflection angle beyond which light cannot exit a medium?

  • A Incident angle
  • B Reflection angle
  • C Refractive angle
  • D Critical angle
429
Medium fpsc Uploaded: 06 Aug 2026

Which quantity describes the turning effect of a force around a pivot point?

  • A Torque
  • B Momentum
  • C Impulse
  • D Velocity
430
Medium ppsc Uploaded: 17 Aug 2026

The magnifying power of a simple microscope increases when the focal length of its lens is:

  • A Made infinite
  • B Increased
  • C Decreased
  • D Kept constant
431
Medium css fpsc ppsc Uploaded: 13 Jul 2026

Which experiment proved that the atom has a small dense positively charged nucleus?

  • A Rutherford's gold foil experiment
  • B Millikan's oil drop experiment
  • C Young's double slit experiment
  • D Michelson-Morley experiment
432
Easy css Uploaded: 06 Aug 2026

Which law relates the pressure and volume of a gas at constant temperature?

  • A Charles's Law
  • B Boyle's Law
  • C Gay-Lussac's Law
  • D Avogadro's Law
433
Easy nts Uploaded: 17 Aug 2026

The zeroth law of thermodynamics deals with:

  • A Entropy
  • B Conservation of energy
  • C Thermal equilibrium
  • D Absolute zero
434
Hard pms Uploaded: 17 Aug 2026

Which particle carries a negative electric charge?

  • A Positron
  • B Electron
  • C Neutron
  • D Proton
435
Hard nts Uploaded: 17 Aug 2026

A body of mass 5 kg moving at 4 m/s has kinetic energy of:

  • A 80 J
  • B 40 J
  • C 20 J
  • D 10 J
436
Medium fpsc ppsc nts Uploaded: 13 Jul 2026

Which type of energy is stored in a compressed spring?

  • A Kinetic energy
  • B Thermal energy
  • C Elastic potential energy
  • D Chemical energy
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Medium css Uploaded: 06 Aug 2026

What causes the phenomenon of a rainbow?

  • A Refraction and dispersion of light
  • B Reflection of light
  • C Diffraction of light
  • D Polarization of light
438
Medium ppsc Uploaded: 06 Aug 2026

What is the term for a device that stores electrical energy in an electric field?

  • A Resistor
  • B Inductor
  • C Transformer
  • D Capacitor
439
Medium pms Uploaded: 17 Aug 2026

Beats in sound are produced due to the superposition of two waves having:

  • A Slightly different frequencies
  • B Same frequency
  • C Same amplitude only
  • D Different mediums