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Physics MCQs

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61
Easy fpsc Uploaded: 17 Aug 2026

The power of a machine that does 1000 J of work in 10 seconds is:

  • A 10 W
  • B 1000 W
  • C 100 W
  • D 10000 W
Permalink
Correct Answer: Option C — 100 W
Explanation: Power equals work divided by time, so 1000 joules divided by 10 seconds gives 100 watts. Power measures the rate at which work is done or energy is transferred in a system.
Submitted by: PaperMCQs
62
Easy ppsc Uploaded: 06 Aug 2026

Which of the following is a scalar quantity?

  • A Mass
  • B Displacement
  • C Velocity
  • D Force
Permalink
Correct Answer: Option A — Mass
Explanation: Mass is a scalar quantity because it has only magnitude and no direction. Unlike vector quantities such as velocity, force, and displacement, which require both magnitude and direction to be fully described, mass is fully specified by a single number.
Submitted by: PaperMCQs
63
Easy css Uploaded: 06 Aug 2026

What is the term for an object floating in equilibrium where buoyant force equals its weight?

  • A Neutral buoyancy
  • B Sinking
  • C Displacement
  • D Density equilibrium
Permalink
Correct Answer: Option A — Neutral buoyancy
Explanation: Neutral buoyancy occurs when the upward buoyant force acting on a floating or submerged object exactly balances its downward weight, resulting in the object remaining suspended without rising or sinking further in the fluid.
Submitted by: PaperMCQs
64
Easy css Uploaded: 17 Aug 2026

A calorimeter is used to measure:

  • A Temperature
  • B Pressure
  • C Volume
  • D Heat energy
Permalink
Correct Answer: Option D — Heat energy
Explanation: A calorimeter is a device specifically designed to measure the amount of heat energy released or absorbed during a chemical reaction or physical process, based on temperature changes in a known substance.
Submitted by: PaperMCQs
65
Easy nts Uploaded: 17 Aug 2026

Which lens is used to correct hyperopia (farsightedness)?

  • A Convex lens
  • B Concave lens
  • C Cylindrical lens
  • D Plane lens
Permalink
Correct Answer: Option A — Convex lens
Explanation: Hyperopia, or farsightedness, occurs when the eye focuses images behind the retina, and it is corrected using a convex (converging) lens that helps focus light rays properly onto the retina.
Submitted by: PaperMCQs
66
Easy ppsc Uploaded: 17 Aug 2026

Like charges:

  • A Repel each other
  • B Neutralize each other
  • C Attract each other
  • D Have no interaction
Permalink
Correct Answer: Option A — Repel each other
Explanation: According to the fundamental laws of electrostatics, like electric charges, whether both positive or both negative, exert a repulsive force on each other, pushing away from one another.
Submitted by: PaperMCQs
67
Easy ppsc Uploaded: 06 Aug 2026

Which type of circuit provides multiple paths for current to flow?

  • A Series circuit
  • B Open circuit
  • C Short circuit
  • D Parallel circuit
Permalink
Correct Answer: Option D — Parallel circuit
Explanation: In a parallel circuit, multiple paths are available for current to flow between components, meaning voltage remains constant across each branch while total current divides among them. If one branch fails, others continue operating normally.
Submitted by: PaperMCQs
68
Easy pms Uploaded: 06 Aug 2026

Which type of current does a battery supply?

  • A Neither AC nor DC
  • B Direct current
  • C Both AC and DC
  • D Alternating current
Permalink
Correct Answer: Option B — Direct current
Explanation: A battery supplies direct current (DC), which flows consistently in one direction through a circuit. This is different from alternating current (AC), which periodically reverses direction, typically supplied by power grids for household and industrial use.
Submitted by: PaperMCQs
69
Easy fpsc Uploaded: 17 Aug 2026

A rainbow is formed due to the:

  • A Polarization of light
  • B Reflection of light only
  • C Diffraction of light only
  • D Refraction and dispersion of light in water droplets
Permalink
Correct Answer: Option D — Refraction and dispersion of light in water droplets
Explanation: A rainbow forms when sunlight enters water droplets in the atmosphere, undergoing refraction, internal reflection, and dispersion into its component colors before exiting the droplet toward the observer's eye.
Submitted by: PaperMCQs
70
Easy pms Uploaded: 17 Aug 2026

A parallel circuit has:

  • A Multiple paths for current flow
  • B Zero voltage across all elements
  • C Only one path for current flow
  • D No resistors
Permalink
Correct Answer: Option A — Multiple paths for current flow
Explanation: In a parallel circuit, components are connected across common points, providing multiple paths for current to flow, so the voltage remains the same across each branch while total current divides among them.
Submitted by: PaperMCQs
71
Easy ppsc Uploaded: 06 Aug 2026

What is the unit of frequency?

  • A Hertz
  • B Joule
  • C Watt
  • D Newton
Permalink
Correct Answer: Option A — Hertz
Explanation: Hertz (Hz) is the SI unit of frequency, named after Heinrich Hertz. It measures the number of complete cycles or oscillations of a wave that occur per second, commonly used for sound waves, radio waves, and alternating current.
Submitted by: PaperMCQs
72
Easy pms Uploaded: 06 Aug 2026

What is the term for the minimum energy required to remove an electron from an atom?

  • A Ionization energy
  • B Binding energy
  • C Kinetic energy
  • D Photon energy
Permalink
Correct Answer: Option A — Ionization energy
Explanation: Ionization energy refers to the minimum amount of energy required to remove an electron from an atom or ion in its ground state, forming a positively charged ion, and varies systematically across the periodic table.
Submitted by: PaperMCQs
73
Easy nts Uploaded: 06 Aug 2026

What is the phenomenon called when light changes speed and direction while passing from one medium to another?

  • A Reflection
  • B Interference
  • C Refraction
  • D Polarization
Permalink
Correct Answer: Option C — Refraction
Explanation: Refraction is the bending of light as it passes from one transparent medium to another with a different optical density, caused by a change in the speed of light. This phenomenon explains why a straw appears bent when placed in water.
Submitted by: PaperMCQs
74
Easy ppsc Uploaded: 17 Aug 2026

The working principle of an optical fiber is based on:

  • A Polarization
  • B Refraction
  • C Diffraction
  • D Total internal reflection
Permalink
Correct Answer: Option D — Total internal reflection
Explanation: Optical fibers transmit light signals over long distances by relying on the principle of total internal reflection, which keeps the light confined within the core of the fiber as it travels.
Submitted by: PaperMCQs
75
Easy pms Uploaded: 06 Aug 2026

What is the term for energy possessed by an object due to its motion?

  • A Potential energy
  • B Thermal energy
  • C Nuclear energy
  • D Kinetic energy
Permalink
Correct Answer: Option D — Kinetic energy
Explanation: Kinetic energy is the energy an object possesses due to its motion, calculated using its mass and velocity. A moving car, a flying ball, and flowing water all demonstrate kinetic energy in everyday situations.
Submitted by: PaperMCQs
76
Easy ppsc Uploaded: 17 Aug 2026

Absolute zero on the Kelvin scale corresponds to:

  • A 0 degrees Celsius
  • B -273.15 degrees Celsius
  • C 100 degrees Celsius
  • D -100 degrees Celsius
Permalink
Correct Answer: Option B — -273.15 degrees Celsius
Explanation: Absolute zero, the lowest possible temperature where particles have minimum thermal motion, corresponds to -273.15 degrees Celsius, which is defined as zero Kelvin on the absolute temperature scale.
Submitted by: PaperMCQs
77
Easy pms Uploaded: 17 Aug 2026

A body moving in a circle at constant speed has:

  • A Centripetal acceleration directed toward the center
  • B Constant velocity
  • C Zero acceleration
  • D Acceleration directed away from the center
Permalink
Correct Answer: Option A — Centripetal acceleration directed toward the center
Explanation: Uniform circular motion involves continuously changing direction of velocity, producing centripetal acceleration directed toward the center of the circle, even though the speed remains constant throughout the motion.
Submitted by: PaperMCQs
78
Easy fpsc ppsc nts Uploaded: 13 Jul 2026

What is the speed of light in a vacuum?

  • A 3 x 10 to the power 6 m/s
  • B 3 x 10 to the power 10 m/s
  • C 3 x 10 to the power 4 m/s
  • D 3 x 10 to the power 8 m/s
Permalink
Correct Answer: Option D — 3 x 10 to the power 8 m/s
Explanation: The speed of light in a vacuum is approximately 3 x 10 to the power of 8 metres per second or 300000 kilometres per second and is denoted by the letter c.
Submitted by: PaperMCQs
79
Easy css Uploaded: 06 Aug 2026

Which particle has no electric charge?

  • A Neutron
  • B Proton
  • C Electron
  • D Positron
Permalink
Correct Answer: Option A — Neutron
Explanation: The neutron is a subatomic particle found in the nucleus of an atom that carries no net electric charge. Along with protons, neutrons contribute to the atomic mass, but unlike protons, they do not affect the atom's overall charge.
Submitted by: PaperMCQs
80
Easy ppsc Uploaded: 06 Aug 2026

What is the term for an object's tendency to maintain constant velocity unless acted upon?

  • A Momentum
  • B Torque
  • C Impulse
  • D Inertia
Permalink
Correct Answer: Option D — Inertia
Explanation: Inertia describes an object's natural tendency to resist changes in its state of motion, whether at rest or moving at constant velocity. Objects with greater mass exhibit greater inertia and require more force to accelerate.
Submitted by: PaperMCQs
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