JEE Physics - MCQ Practice Questions

The rest mass energy of an electron is approximately:

The de Broglie wavelength of a particle is given by:

The binding energy per nucleon is maximum for:

A radioactive nucleus has half-life of 10 days. After 30 days, the fraction of original nuclei remaining is:

Compton scattering demonstrates:

The energy of a photon in terms of wavelength is:

In the Bohr model, the radius of nth orbit in a hydrogen atom is proportional to:

The ratio of specific charge (e/m) for an α-particle to that of a proton is:

A photon of energy 13.6 eV ionizes a hydrogen atom in its ground state. What is the kinetic energy of the ejected electron?

Which of the following correctly represents the order of penetrating power of nuclear radiations?

The binding energy per nucleon of ²⁵⁶Fe (Z=26) is 8.8 MeV. The total binding energy of this nucleus is approximately:

A nucleus undergoes beta-minus decay. Which of the following is correct?

The angular momentum of an electron in the Bohr model is quantized as:

In a nuclear reaction, ¹⁴₇N + ⁴₂He → ¹⁷₈O + ?. The missing particle is:

Which statement about nuclear forces is correct?

The ionization energy of He⁺ (hydrogen-like ion) is:

A photon of energy 13.6 eV is incident on a hydrogen atom in ground state. What is the maximum kinetic energy of the ejected electron?

In the Bohr model, which of the following represents the radius of the nth orbit in a hydrogen atom?

In beta decay, a neutron converts to a proton. Which particle is emitted?

Which of the following statements about alpha particles is correct?