What are Laws of Physics? Laws of Physics can be described as "statements inferred from particular facts which have been deduced and derived based on empirical observations." The Laws of Physics are "facts applicable to a defined group or class of phenomena, and expressible by the statement that a particular phenomenon always occurs if certain conditions be present." Simply put, Laws of Physics are phenomenon that have been experimented and tested over several years under several conditions before being accepted as factual statements.
The basic Laws of Physics can be broadly categorized as: Classical Physics that deals with the observable world (classical mechanics), and Atomic Physics that deals with the interactions between elementary and sub atomic particles (quantum mechanics). The formulation of laws based on our environment and behavior of elements in the environment is a fundamental aim of science.

The below are the some important laws of physics
Archimede's Principle:
A law stating that a body totally or partially immersed in a fluid is subject to an upward force equal in magnitude to the weight of fluid it displaces. The principle was discovered in 3rd century BCE by the greek mathematician, Archimedes.
Avogadro's Law:
A law stating that equal volumes of gases at the same temperature and pressure contain equal numbers of molecules. this was an inspired guess in1811 by the Italian scientist Amedeos Avogadro that turned out to be correct.
Newton's (1642-1727) Laws:
Laws of Gravitation:
Objects attract each other with a force directly proportional to the product of the masses of the objects and inversely proportional to the square of the distance between them. Hence for objects on or near the earth, the mass of the earth is very much greater than the object, and so the gravitational force between them makes objects fall towards the earth
Newton's first law of motion: sometimes referred to as the law of inertia. An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
Newton's second law of motion: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
Newton's third law of motion: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object.
Coulomb's (1738-1806) Law: The force between the two electric charges reduces to a quarter of its former value when the distance between them is doubled. The SI unit of the electrical charge, coulomb, is named after Charles Augustin de Coulomb who established the law.
Stefan's (1835-1883) Law: The total energy radiated from a black body is equal to the fourth power of its absolute temperature.
Pascal's (1623-1662) Law: When pressure is applied to a fluid, the pressure change is transmitted to every part of the fluid without loss. Hydraulic machines like the hydraulic press work on this principle.
Atmospheric pressure decreases with increase in height. The SI unit of pressure,Pascal, is named after Pascal who established this law.
Hooke's (1635-1703) Law: Hooke's law states that the extension of a spring is proportional to the tension stretching it. doubling of the tension results in the doubling of the amounts of stretch.
Lenz's (1805-1865) Law: It states that when an electric current is induced by a change in magnetic field, the induced current is always in such as a direction that its magnetic field opposes the change of field which causes the induction.
Dalton's (1766-1844) Law: Dalton's law states that the total pressure of a mixture of gases is equal to the sum of the partial pressures of its components, that is, the sum of the pressures that each component would exert if it were present alone and occupied the same volume as the mixture.
In 1803, Dalton's formulated his atomic theory stating that matter is made up of particles or atoms which are not subdivided during chemical change. It is said that atoms of the same chemical element are similar and equal in weight, that atoms of different elements have different properties and different weights and the chemical compounds are formed when atoms of different elements combine in simple proportions.
Faraday's (1791-1867) Law: Law of Electrolysis: The amount of chemical change during electrolysis is proportional to the charge passed. The masses of substances liberated or deposited by the same quantity of electric charge are proportional to their chemical equivalents.
Law of Electromagnetic Induction: An electromagnetic flux is induced in a conductor when the magnetic field surrounding it changes. The magnitude of the electromagnetic flux is proportional to the rate of the change of the field. The direction of the induced electromagnetic flux depends on the orientation of the field.
Ohm's (1787-1854) Law: Ohm's Law states that the amount of current flows in an electric circuit is governed by the voltage of the battery or dynamo which powers it. In other words the current through a conductor is directly proportional to the potential difference across the conductor and inversely proportional to its resistance. The SI unit of electrical resistance, the ohm is named after George Simon Ohm, who established this law.

1. Who has discovered the Archimede's Principle in 3rd century BCE by the?

A. Greek mathematician B. Greek Scientist C. Greek Writer D. American Scientist

Answer: Option A
2. Which Law states the total energy radiated from a black body is equal to the fourth power of its absolute temperature?

A. Coulomb's law B. Pascal's law C. Stefan's law D. Hooke's law

Answer: Option C
3. The SI unit of electrical charge is?

A. Ohm's B. Coulomb C. Kilogram D. Watt

Answer: Option B
4. What is the measurement of pressure?

A. Coulomb B. Ohm C. Watt D. Pascal

Answer: Option D
5. Which law states that the amount of current flows in an electrical circuit is governed by the voltage of the battery or dynamo which powers it?

A. Coulomb's law B. Stefan's law C. Pascal's law D. Ohm's law

Answer: Option D
6. When an object is immersed in water, it experiences?

A. Upward thrust B. Downward thrust C. Downward force D. Loss of weight

Answer: Option A
7. The SI unit of the electrical charge is named after?

A. Issac Newton B. Pascal C. Hooke D. Charles Augustin de coulomb

Answer: Option D
8. Atmospheric pressure is decreasing with ___?

A. Decrease in Temperature B. Decrease in height C. Decrease in Weight D. Increase in height

Answer: Option D
9. In 1803, Dalton formulated ____ theory?

A. Molecular B. Atomic C. Nuclear D. Chemical compound

Answer: Option B
10. What is an electron emitted from a nucleus in radioactive decay?

A. Beta rays B. Beta decay C. Electrode D. Mole

Answer: Option A