Physics Mock Test
Physics Mock Test
Q. First artificial satellite ?
A) Aryabhata B) Sputnik-1 C) INSAT-1B D) Apollo-11
Ans: B) Sputnik-1
Explanation: Launched by USSR in 1957, it was the first human-made satellite.
Q. First person on the Moon ?
A) Neil Armstrong B) Yuri Gagarin C) Rakesh Sharma D) Edwin Aldrin
Ans: A) Neil Armstrong
Explanation: Neil Armstrong (Apollo 11, 1969) first walked on the Moon.
Q. Sun is made of which gases ?
A) Hydrogen & Helium B) Oxygen & Nitrogen C) Carbon & Sulfur D) Argon & Krypton
Ans: A) Hydrogen & Helium
Explanation: Sun consists mainly of hydrogen and helium; fusion of hydrogen produces energy.
Q. Reason for seasons on Earth ?
A) Earth’s rotation B) Earth’s tilt & revolution C) Moon’s gravity D) Sun’s rotation
Ans: B) Earth’s tilt & revolution
Explanation: Tilt of Earth’s axis and orbit around Sun causes seasonal changes in sunlight intensity and duration.
Q. Supernova is related to ?
A) Star explosion B) Planet formation C) Black hole formation D) Comet path
Ans: A) Star explosion
Explanation: Supernova is a massive star explosion, releasing huge energy; may form neutron stars or black holes.
Q. Speed of light in vacuum
A) 3.0 × 10⁸ m/s B) 3.0 × 10 m/s C) 3.0 × 10⁵ km/s D) 3.0 × 10³ m/s
Ans: A) 3.0 × 10⁸ m/s
Explanation: Light travels at 3×10⁸ m/s in vacuum, the universal speed limit for all objects and signals.
Q. Filament of a bulb is made of
A) Tungsten B) Copper C) Iron D) Nickel
Ans: A) Tungsten
Explanation: Tungsten has a high melting point (~3400°C), so it glows without melting.
Q. Sound travels fastest in
A) Gas B) Liquid C) Solid D) Vacuum
Ans: C) Solid
Explanation: Particles in solids are closely packed, transmitting vibrations faster than liquids or gases.
Q. Newton’s Third Law is called
A) Law of Inertia B) Action-Reaction Law C) Law of Gravitation D) Law of Kinetic Energy
Ans: B) Action-Reaction Law
Explanation: For every action, there is an equal and opposite reaction between interacting bodies.
Q. Surface of a black hole is called
A) Quasar B) Event Horizon C) Neutron Star D) Redshift
Ans: B) Event Horizon
Explanation: The event horizon is the boundary from which nothing can escape a black hole.
Q. Barometer measures
A) Oxygen B) Atmospheric pressure C) Nitrogen D) Hydrogen
Ans: B) Atmospheric pressure
Explanation: Barometers measure air pressure to predict weather changes.
Q. Who first made the electric bulb
A) Thomas Edison B) Graham Bell C) Faraday D) Newton
Ans: A) Thomas Edison
Explanation: Edison developed the practical incandescent bulb using a tungsten filament in vacuum.
Q. Image formed by a plane mirror
A) Virtual and Upright B) Real and Inverted C) Magnified D) Fuzzy
Ans: A) Virtual and Upright
Explanation: Plane mirrors form upright, virtual images behind the mirror.
Q. Polar satellite moves in which direction
A) East-West B) North-South C) Parallel to Equator D) None
Ans: B) North-South
Explanation: Polar satellites orbit from pole to pole, covering the entire Earth for mapping.
Q. Laser works on the principle of
A) Diffraction B) Stimulated Emission C) Reflection D) Polarization
Ans: B) Stimulated Emission
Explanation: Laser produces coherent light by stimulated emission of photons of same wavelength and phase.
Q. Image formed on human eye
A) Real and Inverted B) Virtual and Upright C) Real and Upright D) None
Ans: A) Real and Inverted
Explanation: The eye lens forms a real, inverted image on the retina; the brain interprets it as upright.
Q. SI unit of electric current
A) Watt B) Ohm C) Ampere D) Joule
Ans: C) Ampere
Explanation: Ampere measures the flow of electric charge per second through a conductor.
Q. Energy from the Sun is produced by
A) Combustion B) Nuclear Fission C) Nuclear Fusion D) Conduction
Ans: C) Nuclear Fusion
Explanation: Hydrogen nuclei fuse to form helium, releasing vast energy in the Sun.
Q. Which planet is called “Red Planet”
A) Mercury B) Mars C) Venus D) Saturn
Ans: B) Mars
Explanation: Mars appears red due to iron oxide (rust) on its surface.
Q. Atomic bomb works on which principle
A) Nuclear Fission B) Nuclear Fusion C) Chemical Reaction D) Electromagnetic Induction
Ans: A) Nuclear Fission
Q. Instrument to measure potential difference:
A) Ammeter B) Voltmeter C) Galvanometer D) Barometer
Ans: B) Voltmeter
Explanation: Measures voltage between two points in a circuit.
Q. Rear-view mirror in vehicles:
A) Plane B) Concave C) Convex D) Cylindrical
Ans: C) Convex
Explanation: Convex mirrors provide a wide field of view and reduce blind spots.
Q. SI unit of power:
A) Watt B) Joule C) Newton D) Volt
Ans: A) Watt
Explanation: Power is the rate of doing work, measured in watts.
Q. Discoverer of electron:
A) J. J. Thomson B) Rutherford C) Bohr D) Newton
Ans: A) J. J. Thomson
Explanation: Discovered electrons using cathode ray experiments.
Q. Unit of frequency:
A) Watt B) Joule C) Hertz D) Pascal
Ans: C) Hertz
Explanation: Hertz measures number of cycles per second of a wave.
Q. Planet with shortest day:
A) Earth B) Jupiter C) Mars D) Neptune
Ans: B) Jupiter
Explanation: Jupiter rotates fully in about 10 hours, giving it the shortest day.
Q. Device converting electricity to sound:
A) Speaker B) Microphone C) Transformer D) Amplifier
Ans: A) Speaker
Explanation: Converts electrical signals into sound waves.
Q. Part controlling light in the eye:
A) Retina B) Cornea C) Iris D) Lens
Ans: C) Iris
Explanation: Iris adjusts pupil size to control light entering the eye.
Q. Unit of electric current:
A) Volt B) Watt C) Ampere D) Joule
Ans: C) Ampere
Explanation: Current, the flow of electric charge, is measured in amperes.
Q. Metal used in thermometers:
A) Mercury B) Copper C) Silver D) Lead
Ans: A) Mercury
Explanation: Mercury expands uniformly with temperature, ideal for thermometers.
Q. Splitting of white light:
A) Reflection B) Refraction C) Dispersion D) Diffusion
Ans: C) Dispersion
Explanation: Dispersion separates white light into its constituent colors (rainbow).
Q. Instrument for air pressure:
A) Thermometer B) Barometer C) Hygrometer D) Altimeter
Ans: B) Barometer
Explanation: Measures atmospheric pressure accurately.