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Physics MCQs with Answers (Solved) – PKMCQs, MCQs Forum:
51. The color with the highest energy in visible light is:
a) Red
b) Yellow
c) Blue
d) Violet ✅
52. A transformer is used to:
a) Increase current
b) Increase or decrease voltage ✅
c) Convert AC to DC
d) Store electric charge
53. The property of sound waves responsible for the pitch of a sound is:
a) Amplitude
b) Frequency ✅
c) Wavelength
d) Speed
54. The main source of energy for the Earth is:
a) The Moon
b) The Sun ✅
c) The Ocean
d) Nuclear Power
55. The device used to measure resistance is:
a) Ammeter
b) Ohmmeter ✅
c) Voltmeter
d) Galvanometer
56. The highest frequency electromagnetic waves are:
a) Infrared
b) Microwaves
c) X-rays
d) Gamma rays ✅
57. A convex lens is also called:
a) Converging lens ✅
b) Diverging lens
c) Cylindrical lens
d) None of these
58. The sound that is above human hearing range is called:
a) Infrasound
b) Ultrasound ✅
c) Supersonic
d) None of these
59. The process by which an object is charged by touching is called:
a) Induction
b) Conduction ✅
c) Polarization
d) Neutralization
60. The energy of a moving object is called:
a) Potential energy
b) Kinetic energy ✅
c) Heat energy
d) Chemical energy
61. The resistance of an ideal conductor is:
a) Infinite
b) Zero ✅
c) Very high
d) None of these
62. The SI unit of magnetic field strength is:
a) Weber
b) Tesla ✅
c) Henry
d) Gauss
63. The acceleration of an object moving in a circle is called:
a) Linear acceleration
b) Centripetal acceleration ✅
c) Angular acceleration
d) None of these
64. The scientist who formulated the three laws of planetary motion was:
a) Galileo
b) Newton
c) Kepler ✅
d) Einstein
65. The energy stored in stretched or compressed objects is called:
a) Kinetic energy
b) Potential energy ✅
c) Thermal energy
d) Electrical energy
66. The force that opposes motion through a fluid is called:
a) Friction
b) Air resistance
c) Drag ✅
d) Tension
67. The unit of measurement for electric potential difference is:
a) Ampere
b) Watt
c) Volt ✅
d) Ohm
68. The energy produced by vibrating objects is called:
a) Electrical energy
b) Thermal energy
c) Sound energy ✅
d) Chemical energy
69. Which of the following is a scalar quantity?
a) Displacement
b) Velocity
c) Work ✅
d) Acceleration
70. The type of mirror used in rear-view mirrors of vehicles is:
a) Convex ✅
b) Concave
c) Plane
d) Cylindrical
71. Which type of wave requires a medium to travel?
a) Electromagnetic waves
b) Sound waves ✅
c) Light waves
d) X-rays
72. The frequency of a wave is measured in:
a) Watts
b) Joules
c) Hertz ✅
d) Newtons
73. The power of a convex lens is:
a) Positive ✅
b) Negative
c) Zero
d) None of these
74. The boiling point of water in Kelvin is:
a) 100 K
b) 212 K
c) 373 K ✅
d) 273 K
75. The bending of waves around obstacles is called:
a) Reflection
b) Refraction
c) Diffraction ✅
d) Interference
76. The type of image formed by a plane mirror is:
a) Real and inverted
b) Virtual and upright ✅
c) Magnified
d) None of these
77. The type of motion in which an object moves back and forth about a fixed point is called:
a) Translational motion
b) Rotational motion
c) Vibratory motion ✅
d) Random motion
78. The law that states that pressure applied to an enclosed fluid is transmitted equally in all directions is:
a) Boyle’s Law
b) Pascal’s Law ✅
c) Archimedes' Principle
d) Bernoulli’s Principle
79. The energy possessed by a stretched spring is:
a) Kinetic energy
b) Potential energy ✅
c) Thermal energy
d) Mechanical energy
80. The speed of sound in air at room temperature is approximately:
a) 200 m/s
b) 340 m/s ✅
c) 500 m/s
d) 600 m/s
81. The device used to measure electric current is:
a) Voltmeter
b) Ammeter ✅
c) Ohmmeter
d) Galvanometer
82. The type of lens used to correct hypermetropia (far-sightedness) is:
a) Concave lens
b) Convex lens ✅
c) Cylindrical lens
d) Bifocal lens
83. The property of a material that allows it to be stretched without breaking is:
a) Hardness
b) Elasticity ✅
c) Ductility
d) Malleability
84. The color with the longest wavelength in visible light is:
a) Red ✅
b) Yellow
c) Green
d) Violet
85. The rate of doing work is called:
a) Power ✅
b) Energy
c) Momentum
d) Force
86. The scientist who discovered the law of universal gravitation was:
a) Einstein
b) Newton ✅
c) Galileo
d) Kepler
87. The pressure exerted by a liquid increases with:
a) Decreasing depth
b) Increasing depth ✅
c) Decreasing density
d) None of these
88. The material that allows electric current to pass through easily is called:
a) Insulator
b) Semiconductor
c) Conductor ✅
d) Resistor
89. The SI unit of mass is:
a) Gram
b) Kilogram ✅
c) Newton
d) Joule
90. The principle that states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure is:
a) Pascal’s Principle
b) Boyle’s Law
c) Bernoulli’s Principle ✅
d) Archimedes’ Principle
91. The law that states that volume of a gas is inversely proportional to pressure is:
a) Charles’ Law
b) Pascal’s Law
c) Boyle’s Law ✅
d) Bernoulli’s Principle
92. The SI unit of luminous intensity is:
a) Candela ✅
b) Lumen
c) Watt
d) Lux
93. The scientist who developed the special theory of relativity was:
a) Newton
b) Galileo
c) Einstein ✅
d) Tesla
94. Which of the following is a non-renewable energy source?
a) Solar energy
b) Wind energy
c) Fossil fuels ✅
d) Geothermal energy
95. The number of complete waves passing a given point per second is called:
a) Wavelength
b) Amplitude
c) Frequency ✅
d) Period
96. The force acting on an object moving in a circular path directed towards the center is:
a) Centrifugal force
b) Centripetal force ✅
c) Gravitational force
d) Normal force
97. Which of the following has the highest refractive index?
a) Water
b) Air
c) Glass ✅
d) Vacuum
98. The amount of heat required to raise the temperature of 1 gram of a substance by 1°C is called:
a) Latent heat
b) Specific heat capacity ✅
c) Thermal expansion
d) Enthalpy
99. The process of separating charged particles using an electric field is called:
a) Electromagnetic induction
b) Electrolysis ✅
c) Electromagnetism
d) Capacitance
100. The branch of physics that deals with the motion of bodies is:
a) Optics
b) Thermodynamics
c) Mechanics ✅
d) Electromagnetism
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