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Physics MCQs

225 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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The electron was discovered by:

  • A Niels Bohr
  • B J.J. Thomson
  • C James Chadwick
  • D Ernest Rutherford
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Which phenomenon allows optical fibres to transmit light signals over long distances?

  • A Total internal reflection
  • B Refraction
  • C Diffraction
  • D Dispersion
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What is the term for the resistance of a fluid to flow due to internal friction?

  • A Density
  • B Buoyancy
  • C Viscosity
  • D Surface tension
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A real image can be formed on a screen, whereas a virtual image:

  • A Is always inverted
  • B Cannot be formed on a screen
  • C Is always magnified
  • D Can also be formed on a screen
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What is the process by which heat transfers through direct contact between particles?

  • A Convection
  • B Conduction
  • C Radiation
  • D Insulation
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Heat always flows from a body at:

  • A Higher temperature to lower temperature
  • B Zero temperature
  • C Equal temperature
  • D Lower temperature to higher temperature
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Which material is generally used as an insulator?

  • A Copper
  • B Aluminum
  • C Silver
  • D Rubber
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Which quantity remains conserved in an elastic collision?

  • A Only kinetic energy
  • B Both momentum and kinetic energy
  • C Neither momentum nor kinetic energy
  • D Only momentum
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Which colour of visible light has the shortest wavelength?

  • A Red
  • B Violet
  • C Orange
  • D Yellow
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What does the term 'half-life' refer to in nuclear physics?

  • A Time for all radioactive atoms to decay
  • B Time for a nucleus to form
  • C Time for half of the radioactive atoms in a sample to decay
  • D Time for an atom to become stable
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Ohm's law relates voltage, current, and:

  • A Power
  • B Charge
  • C Resistance
  • D Frequency
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What is the term for the total distance covered divided by total time taken, regardless of direction?

  • A Velocity
  • B Acceleration
  • C Displacement
  • D Average speed
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Which quantity is defined as mass per unit volume?

  • A Specific gravity
  • B Weight
  • C Density
  • D Pressure
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What is the term for the process by which a substance changes from liquid to gas below its boiling point?

  • A Boiling
  • B Condensation
  • C Sublimation
  • D Evaporation
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Which lens is used to correct myopia (nearsightedness)?

  • A Bifocal lens
  • B Convex lens
  • C Concave lens
  • D Cylindrical lens
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What is the process by which an unstable atomic nucleus spontaneously emits radiation?

  • A Fission
  • B Fusion
  • C Diffraction
  • D Radioactive decay
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Which type of spectrum is produced when white light passes through a prism?

  • A Line emission spectrum
  • B Continuous spectrum
  • C Band spectrum
  • D Absorption spectrum
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The relationship between wave speed, frequency, and wavelength is given by:

  • A v = f + lambda
  • B v = f/lambda
  • C v = f x lambda
  • D v = lambda/f
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Which scientist discovered electromagnetic induction demonstrating that a changing magnetic field induces current?

  • A Michael Faraday
  • B James Clerk Maxwell
  • C Nikola Tesla
  • D Heinrich Hertz
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What phenomenon explains why the sky appears blue?

  • A Total internal reflection
  • B Reflection
  • C Refraction
  • D Rayleigh scattering