Here are 100+ Gk Question and Answer about Physics:
Q.1 Who is known as father of modern physics?
Answer: Albert Einstein
Q.2 Which device is used to limit the current in an electrical circuit?
Answer: Fuse
Q.3 What is the minimum numbers of unequal vectors which can give zero resultant?
Answer: Three
Q.4 Water is not suitable as a calorimetric substance because?
Answer: It has high specific heat
Q.5 Which types of coal produces most heat per unit?
Answer: Anthracite
Q.6 When a body falls from an aeroplane, there is increase in its?
Answer: Kinetic Energy
Q.7 Which waves is used for communication by artificial satellites?
Answer: Micro waves
Q.8 The energy of the sun is continuously created due to?
Answer: Nuclear fusion
Q.9 When the barometer reading dips suddenly, it is an indication of?
Answer: Storm
Q.10 Coolidge tube is used to produce which rays?
Answer: X-rays
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50 Miscellaneous Gk MCQs about Physics
Q.11 Which is the fourth state of matter?
Answer: Plasma
Q.12 Gamma rays have greatest similarity with?
Answer: X-Rays
Q.13 The sounds having a frequency of 20 Hertz to 20,000 Hertz are known as?
Answer: Audible Sound
Q.14 In the absence of ozone layer, which rays will enter into atmosphere?
Answer: Ultraviolet Rays
Q.15 Which physical quantity is measured in ‘Siemens’?
Answer: Electrical conductance
Q.16 Which instrument is used to measure density?
Answer: Pycnometer
Q.17 The angular velocity depends upon the rate of change of the _______.
Answer: Angular Displacement
Q.18 The Lambert’s law is related to?
Answer: Illumination
Q.19 Who formulated the law of universal gravitation?
Answer: Sir Isaac Newton
Q.20 The Tides on Earth is caused by?
Answer: Gravitational interaction between the Earth, Moon, and Sun.
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50+ Gk MCQs about Physics: Units, Dimension and Motion
Q.21 What keeps planets to orbit around the Sun?
Answer: The gravitational pull of the Sun.
Q.22 What type of wave is sound?
Answer: Sound is a longitudinal mechanical wave.
Q.23 What is the SI unit of loudness of sound?
Answer: The decibel (dB).
Q.24 What is the SI unit of work?
Answer: The joule (J).
Q.25 What is energy?
Answer: Energy is the capacity to do work.
Q.26 What are the two main types of mechanical energy?
Answer: Kinetic energy and Potential energy.
Q.27 What is the SI unit of power?
Answer: The watt (W).
Q.28 What is the unit of electric charge?
Answer: The coulomb (C).
Q.29 What is an electric current?
Answer: Electric current is the flow of electric charge per unit time, measured in Amperes (A).
Q.30 What is the formula for electric current?
Answer: I=V/R
Q.31 What is the SI unit of resistance?
Answer: The ohm (Ω).
Q.32 Who discovered electromagnetic induction?
Answer: Michael Faraday.
Q.33 Which method is use for protecting iron from rusting, by coating a thin layer of Zinc?
Answer: Galvanizing
Q.34 ‘Curie’ is unit of?
Answer: Radioactivity
Q.35 The hydraulic brakes used in automobiles is a direct application of which law?
Answer: Pascal’s law
Q.36 Energy that is produced from coal is called which energy?
Answer: Thermal Energy
Q.37 What is used to split white light into different colours?
Answer: Prism
Q.38 Solar energy is converted into chemical energy during?
Answer: Photosynthesis
Q.39 The term ‘Isoneph’ indicates the lines of equal?
Answer: Cloudiness
Q.40 The type of mirrors used in the headlamp of cars?
Answer: Concave Mirrors
Q.41 The rate of transfer of charges through a circuit is called?
Answer: Electric Current
Q.42 The filament of electric bulb is made up of?
Answer: Tungsten
Q.43 In MRI machine, which wave is used?
Answer: Radio wave
Q.44 Amount of water vapour in the atmosphere is measured in terms of?
Answer: Humidity
Q.45 Which element is used in thermometric substance is _____.
Answer: Mercury
Q.46 The energy that can harness heat stored below the earth’s surface is known as?
Answer: Geothermal Energy
Q.47 What was invented by ‘Zacharias Janssen’?
Answer: Microscope
Q.48 The force which opposes the relative motion between different layers of liquid or gases is called?
Answer: Viscous Force
Q.49 Who developed the technology of under-ground nuclear explosion?
Answer: Dr. Homi J. Bhabha
Q.50 Sensitivity of the human eye is maximum in which colour?
Answer: Yellowish-Green
Q.51 A rocket works on the principle of conservation of?
Answer: Linear Momentum
Q.52 Which layer of the earth’s atmosphere reflects back the radio waves to the earth’s surface?
Answer: Ionosphere
Q.53 Which particles move with same kinetic energy. Which of them has maximum momentum?
Answer: Alpha Particle
Q.54 Small bubbles are perfectly spherical because of?
Answer: Surface tension
Q.55 In mirrors the back surface is coated with a thin layer of?
Answer: Silver
Q.56 Hypermetropia or long sight can be corrected by using?
Answer: Convex lenses
Q.57 Stars appear twinkling because of ______ light.
Answer: Refraction
Q.58 What is used to remove Astigmatism for a human eye?
Answer: Cylindrical lens
Q.59 The audio signals of TV are?
Answer: Frequency Modulated (FM)
Q.60 Which parts of the sunlight makes the solar cooker hot?
Answer: Infra Rays
Q.61 What is colour of light related to?
Answer: Wavelength
Q.62 What is used for accurately measuring very small-time intervals?
Answer: Atomic clocks
Q.63 The material which can be deformed permanently by heat and pressure is called?
Answer: Thermoset
Q.64 A device used for converting A.C. into D.C. is called?
Answer: Rectifier
Q.65 Which is the strongest force in nature?
Answer: Nuclear Force
Q.66 ‘SONAR’ is mostly used by?
Answer: Navigators
Q.67 Who invented X-Ray machine?
Answer: Wilhelm Roentgen
Q.68 Persistence of vision is the principle behind?
Answer: Cinema
Q.69 Who invented Electron Microscope?
Answer: Max Knoll and Ernst Ruska
Q.70 Which instrument is use for measuring intensity of earthquakes?
Answer: Seismograph
Q.71 Which type of mirrors are used in car headlights?
Answer: Concave Mirrors
Q.72 Which atmospheric layer contains ozone layer?
Answer: Stratosphere
Q.73 The spokes used in the wheel of a bicycle increase its?
Answer: Moment of inertia
Q.74 Which process involved in making soap?
Answer: Saponification
Q.75 What is unit of electrical power?
Answer: Watt (W)
Q.76 Which scientist first invented the gramophone?
Answer: Thomas Alva Edison
Q.77 What is the unit of distance in navigation?
Answer: Nautical mile
Q.78 Which colour of light shows maximum deviation when passed through a prism?
Answer: Violet Light
Q.79 0°K is equivalent to how much degree?
Answer: -273°C
Q.80 Which law is also called the law of inertia?
Answer: Newton’s first law
Q.81 Which plastic material commonly used for making gear wheels?
Answer: Nylons
Q.82 What is the working principle of a washing machine?
Answer: Centrifugation
Q.83 Which part of the eye have the largest refractive index?
Answer: The Cornea
Q.84 Which instruments is used to measure humidity?
Answer: Hygrometer
Q.85 A steam engine converts the heat energy of steam into _____.
Answer: Mechanical energy
Q.86 Who developed the theory of Evolution?
Answer: Charles Darwin
Q.87 Who invented the Lightning Rod in 1749?
Answer: Benjamin Franklin
Q.88 When the milk is churned strongly the cream from it is separated out due to?
Answer: Centrifugal force
Q.89 Which instrument is used to record Atmospheric pressure?
Answer: Barometer
Q.90 The study of phenomena at very low temperatures is called?
Answer: Cryogenics
Q.91 what is the SI unit of luminious intensity?
Answer: Candela (cd)
Q.92 When a piece of stone is immersed in water, it displaces water of equal?
Answer: Mass
Q.93 When the locomotion of insects to the source of light is called?
Answer: Phototaxis
Q.94 The splitting of white light into its components is due to what?
Answer: Dispersion
Q.95 Which waves cannot be transmitted through vacuum?
Answer: Sound Waves
Q.96 The boiling point of water depends upon the?
Answer: Atmospheric pressure
Q.97 The loudness of sound depends upon?
Answer: Amplitude
Q.98 1 pound is equal to how many ounces?
Answer: 16
Q.99 Sound of frequency below 20 Hz is called ______.
Answer: Infrasonic Sound
Q.100 What is the phenomenon which established the transverse nature of light?
Answer: Polarisation
Q.101 The waveform of a certain signal can be studied by?
Answer: Cathode Ray Oscilloscope
Q.102 The Ultrasonic waves are produced by which material?
Answer: Piezo electric material
Q.103 Radioactive elements can be traced out in living cell through what?
Answer: Auto radiography
Q.104 In a filament light bulb most of the electric power consumed as?
Answer: infra-red rays
Q.105 What is the SI unit of surface tension?
Answer: N/m
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