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Which of the following statements is tru...

Which of the following statements is true for forces?

A

They obey the inverse square law of distance.

B

They obey the inverse third power law of distances

C

They are short range forces.

D

They are equal in strength to electromagnetic force.

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  7. Half life of radioactive sample undergoing alpha decayis 1.4 x 10^17s....

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  9. The total energy of an electron in an atom in an orbit is -3.4eV. Its...

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  10. The ratio of kinetic energy to the total energy of an electron in a Bo...

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  11. The ratio of wavelength of the lest line of Balmer series and the last...

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