What is the SI unit of force?
The SI unit of force is the Newton, named after Sir Isaac Newton.
Physics MCQ GK Quiz
Physics is the branch of science that studies matter, energy, and the fundamental forces of nature. It explores concepts such as motion, force, energy, light, electricity, magnetism, and atomic structure.
This quiz covers various topics including mechanics, thermodynamics, optics, electromagnetism, and modern physics. It tests the understanding of physical laws, principles, formulas, and their applications in everyday life and scientific phenomena.
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What is the speed of light in vacuum?
The speed of light in vacuum is approximately 3 x 108 meters per second.
Who is known as the father of modern physics?
Albert Einstein is often referred to as the father of modern physics due to his contributions to the field, including the theory of relativity.
What is the first law of thermodynamics?
The first law of thermodynamics states that energy cannot be created or destroyed, only transformed from one form to another.
What is the acceleration due to gravity on Earth?
The acceleration due to gravity on Earth is approximately 9.8 meters per second squared.
What is the formula for kinetic energy?
The formula for kinetic energy is 1/2 mv2, where m is mass and v is velocity.
What is the principle of conservation of momentum?
The principle of conservation of momentum states that the total momentum of a closed system remains constant if no external forces act on it.
What is the unit of electric current?
The unit of electric current is the Ampere, named after André-Marie Ampère.
What is the formula for Ohm's Law?
Ohm's Law states that the voltage (V) across a conductor is equal to the current (I) flowing through it times its resistance (R).
Who discovered the electron?
J.J. Thomson discovered the electron in 1897 through his experiments with cathode rays.
What is the wavelength of visible light?
The wavelength of visible light ranges from approximately 400 to 700 nanometers (nm).
What is the law of reflection?
The law of reflection states that the angle of incidence is equal to the angle of reflection.
What is the unit of frequency?
The unit of frequency is the Hertz (Hz), named after Heinrich Hertz.
What is the phenomenon of splitting of light into its constituent colors called?
Dispersion is the phenomenon where light splits into its constituent colors when passing through a prism.
What is the unit of power?
The unit of power is the Watt (W), named after James Watt.
What is the formula for potential energy?
The formula for potential energy is mgh, where m is mass, g is the acceleration due to gravity, and h is height.
What is the unit of capacitance?
The unit of capacitance is the Farad (F), named after Michael Faraday.
What is the principle behind the working of a transformer?
A transformer works on the principle of mutual induction, where a changing current in one coil induces a current in another coil.
What is the unit of magnetic flux?
The unit of magnetic flux is the Weber (Wb), named after Wilhelm Eduard Weber.
What is the phenomenon of bending of light when it passes from one medium to another called?
Refraction is the phenomenon of bending of light when it passes from one medium to another with different densities.
What is the unit of inductance?
The unit of inductance is the Henry (H), named after Joseph Henry.
What is the principle of a lever?
A lever operates on the principle of mechanical advantage, allowing a smaller force to lift a larger load.
What is the law of conservation of energy?
The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.
What is the speed of sound in air at room temperature?
The speed of sound in air at room temperature is approximately 343 meters per second.
What is the unit of pressure?
The unit of pressure is the Pascal (Pa), named after Blaise Pascal.
What is the principle behind the working of a hydraulic press?
A hydraulic press works on Pascal's law, which states that pressure applied to a confined fluid is transmitted equally in all directions.
What is the unit of electric charge?
The unit of electric charge is the Coulomb (C), named after Charles-Augustin de Coulomb.
What is the principle of buoyancy?
Archimedes' principle states that a body immersed in a fluid experiences an upward force equal to the weight of the fluid displaced by it.
What is the formula for work done?
The formula for work done is force multiplied by distance.
What is the unit of luminous intensity?
The unit of luminous intensity is the Candela (cd).