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Physics MCQs

40 Questions
Subject Preparation Guide

Prepare Physics with confidence

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

MechanicsWavesElectricityModern Physics
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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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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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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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What is polarisation of light?

  • A Splitting light into its spectrum
  • B Restriction of light vibrations to a single plane
  • C Bending of light around obstacles
  • D Total reflection of light
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Which scientific instrument is used to measure the intensity of earthquakes?

  • A Seismograph
  • B Barometer
  • C Anemometer
  • D Hygrometer
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Which phenomenon describes the bending of light around a massive object predicted by general relativity?

  • A Gravitational lensing
  • B Refraction
  • C Diffraction
  • D Polarisation
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The unit used to measure the power of a lens is:

  • A Diopter
  • B Watt
  • C Meter
  • D Candela
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The device used to measure electric current in a circuit is called a:

  • A Ohmmeter
  • B Ammeter
  • C Galvanometer
  • D Voltmeter
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Waves that require a medium to travel are called:

  • A Electromagnetic waves
  • B Radio waves
  • C Light waves
  • D Mechanical waves
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Which phenomenon occurs when two or more waves overlap and combine?

  • A Reflection
  • B Interference
  • C Refraction
  • D Diffraction
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Which effect causes the apparent change in frequency of light from a moving star?

  • A Photoelectric effect
  • B Compton effect
  • C Zeeman effect
  • D Doppler effect
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What is the unit of magnetic flux density?

  • A Tesla
  • B Weber
  • C Henry
  • D Farad
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Archimedes' principle explains the:

  • A Rise of liquid in capillary tubes
  • B Buoyant force on submerged objects
  • C Flow rate of fluids
  • D Pressure exerted by gases
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Which device uses the piezoelectric effect to produce ultrasonic waves?

  • A Loudspeaker
  • B Microphone
  • C Electric motor
  • D Ultrasonic transducer
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What is the phenomenon where a material loses all electrical resistance below a critical temperature?

  • A Semiconduction
  • B Ferromagnetism
  • C Paramagnetism
  • D Superconductivity
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What is the name of the force that holds protons and neutrons together inside the nucleus?

  • A Electromagnetic force
  • B Gravitational force
  • C Strong nuclear force
  • D Weak nuclear force
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What is the phenomenon where certain materials offer zero electrical resistance below a critical temperature?

  • A Semiconduction
  • B Ferromagnetism
  • C Piezoelectricity
  • D Superconductivity
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What is the unit of magnetic flux in the SI system?

  • A Tesla
  • B Weber
  • C Ampere
  • D Farad
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Which of the following has the highest penetrating power?

  • A Sound waves
  • B Alpha particles
  • C Beta particles
  • D Gamma rays
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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