Physics questions with answers 50 question

Here are 50 Physics Questions with Answers suitable for school students and competitive exam practice.
What is physics? – The branch of science that studies matter, energy, force, and motion.
What is the SI unit of force? – Newton (N).
Who discovered gravity? – Isaac Newton.
What is the speed of light in vacuum? – Approximately 3 × 10⁸ m/s.
What is the SI unit of energy? – Joule (J).
What is velocity? – Speed in a specific direction.
What is acceleration? – The rate of change of velocity.
What is the SI unit of power? – Watt (W).
What is work? – Work is done when a force moves an object through a distance.
What is the SI unit of pressure? – Pascal (Pa).
What is friction? – A force that opposes motion between surfaces.
What is mass? – The amount of matter in an object.
What is weight? – The gravitational force acting on an object.
What instrument measures temperature? – Thermometer.
What instrument measures electric current? – Ammeter.
What instrument measures voltage? – Voltmeter.
What is density? – Mass per unit volume.
What is the SI unit of frequency? – Hertz (Hz).
What is sound? – A form of energy produced by vibrations.
Can sound travel in a vacuum? – No.
What is reflection of light? – Bouncing back of light from a surface.
What is refraction? – Bending of light when it passes from one medium to another.
Which mirror is used in vehicles as a rear-view mirror? – Convex mirror.
Which lens is used to correct myopia? – Concave lens.
Which lens is used in magnifying glasses? – Convex lens.
What is electricity? – The flow of electric charge.
What is the SI unit of electric current? – Ampere (A).
What is resistance measured in? – Ohm (Ω).
Who invented the electric bulb? – Thomas Edison.
What is a conductor? – A material that allows electricity to pass through it.
What is an insulator? – A material that resists the flow of electricity.
Name a good conductor of electricity. – Copper.
Name a good insulator. – Rubber.
What is magnetism? – The force produced by magnets that attracts or repels certain materials.
What are the poles of a magnet? – North Pole and South Pole.
Like poles of magnets do what? – Repel each other.
Unlike poles of magnets do what? – Attract each other.
What is kinetic energy? – Energy possessed by a moving object.
What is potential energy? – Stored energy due to position or condition.
What is renewable energy? – Energy from sources that are naturally replenished.
Give one example of renewable energy. – Solar energy.
Give one example of non-renewable energy. – Coal.
What causes day and night? – Earth’s rotation on its axis.
What causes seasons? – Earth’s tilt and revolution around the Sun.
What is the SI unit of time? – Second (s).
What is the SI unit of length? – Metre (m).
What is the SI unit of mass? – Kilogram (kg).
What is momentum? – The product of mass and velocity.
What is inertia? – The tendency of an object to resist changes in its state of motion.
Which planet has the strongest gravitational pull in the Solar System? – Jupiter.
If you want, I can also provide 50 multiple-choice (MCQ) physics questions with answers or 50 Class 10 board-style physics questions.