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Physics General Knowledge Questions: Physics GK Question for Competitive Exams

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Physics Questions for Competitive Exams

Q. Who first gave the concept of ‘Atom’?

Ans . Kanada 

Q. How many times is the proton heavier than the electron?

Ans . 1836 times 

Q. What is AMU?

Ans . It is the unit of atomic mass 

Q. The energy released from the sun and the other stars is due to what?

Ans . Nuclear fusion 

Q. The force that tends to make a nucleus fly apart?

Ans . Electrostatic repulsion 

Q. Which force is responsible to keep the atomic nuclei together?

Ans . Nuclear force only 

Q. How do the electrons move according to the Rutherford model of the atom?

Ans . Electrons orbit the positively charged nuclei 

Q. What does the phenomenon of photo-electric emission establish?

Ans . The quantum nature of light 

Q. When does the emission of energy take place?

Ans . An electron jumps from the higher orbit to the lower orbit 

Q. What did Rutherford’s gold foil experiment prove?

Ans . Positively charged protons are contained in the nucleus of the atom 

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