Physics | Laws and Principles

Practice Physics | Laws and Principles on Bissoy — browse topics below and open any question.

Questions

Which of the following statement is wrong?

ক

The O.M.C is the water content at which the yield is maximum

খ

Below O.M.C, the yield increases with water content to a certain value

গ

After O.M.C, the yield decreases with the water content

ঘ

After O.M.C, the yield increases with the water content

Why does a black board appears black in colour?

ক

It reflects black colour

খ

It absorbs black colour

গ

It reflects all colours

ঘ

It absorbs all the colours

What is the other name of Galileo's law of falling bodies?

ক

Law of motion

খ

Newton's first law

গ

Newton's second law

ঘ

Newton's third law

For an ideal gas, which one of the following statements does not hold true?

ক

The speed of all gas molecules is same

খ

The kinetic energies of all gas molecules are not same

গ

The potential energy of the gas molecules is zero

ঘ

There is no interactive force between the molecules.

For which of the following game, players must have the knowledge of Pascal's law?

ক

Climbing

খ

Paragliding

গ

Rafting

ঘ

Scuba diving

On which principle does the hydraulic lift works?

ক

Newton's law

খ

Pascal's law

গ

Archimedes's law

ঘ

Joule's law

Who developed the theory of relativity?

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Issac Newton

খ

Charles Darwin

গ

Marie Curie

ঘ

Albert Einstein

Pure water is bad conductor of electricity because it is

ক

Feebly ionized

খ

Not volatile

গ

A very good solvent

ঘ

A non-polar solvent

Who proposed the laws of planetary motion?

ক

Isaac Newton

খ

Johannes Kepler

গ

Galileo

ঘ

Roger Bacon

Which of the following medium has the lowest refractive index?

ক

Petrol

খ

Oil

গ

Air

ঘ

Diamond

Which scientist gave 'Laws of motion'?

ক

Galileo

খ

Newton

গ

Einstein

ঘ

Boyle

Which law of physics states that the force between the two electric charges reduces to a quarter of its former value when the distance between them is doubled?

ক

Coulomb's Law

খ

Pascal's Law

গ

Stefan's Law

ঘ

Hooke's Law

Who among the following introduced the concept of electric field for the first time?

ক

Blaise Pascal

খ

Michael Faraday

গ

Charles Augustin de Coulomb

ঘ

Joseph Henry