JEE Physics - MCQ Practice Questions

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?

In photoelectric effect, the stopping potential is 2V. The maximum kinetic energy of ejected electron is:

A nucleus undergoes alpha decay. The mass number and atomic number of the daughter nucleus are:

The activity of a radioactive sample is defined as:

Which of the following statements about photoelectric effect is correct?

In beta decay of ¹⁴₆C, the atomic number of daughter nucleus is:

The half-life of a radioactive substance is 10 days. What fraction of the original sample remains after 30 days?

In Bohr's model, the angular momentum of electron in nth orbit is:

The characteristic X-rays are produced when:

Which of the following statements about the photoelectric effect is correct?

In Bohr's model of hydrogen atom, the angular momentum of electron in the nth orbit is:

If the binding energy per nucleon of ⁵⁶Fe is 8.79 MeV and that of ²³⁵U is 7.59 MeV, which nucleus is more stable?

A ²¹⁰₈₄Po nucleus undergoes alpha decay. The resulting nucleus is:

X-rays are produced when high-speed electrons strike a metal target. This is an example of: