These MCQs are intended for checking your Physics subject, Chapter Nuclei knowledge.

The ground state energy of Hydrogen atom is -13.6 eV. What is the potential energy of electron in this state?

Chadwick was awarded the Nobel prize in Physics in 1935 for his discovery of:

The half life of a radioactive decay is n times its mean life, n is equal to:

Rutherford is the unit of:

Alpha particle emitted from a radioactive material are:

According to Yukawa’s theory of nuclear forces, the origin of nuclear force between nucleons is due to the exchange of

An electron and a positron each having a mass equivalent to 0.53 MeV annihilate each other and produce a photon. The minimum energy of the photon is.

When the mass of a sample of a radioactive substance decreases, the mean life of the sample:

If radio active nuclei emits β-particle, then mass-number:

Nuclear force is:

Radius of 1st Bohr orbit is a0 (= 0.529 Å) What is the radius of 2nd Bohr orbit?

The density of a nucleus is of the order of:

The wavelength of y-rays is of the order of:

The Bohr model of atom:

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