JEE Physics - MCQ Practice Questions

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:

The half-life of ¹⁴C is 5730 years. A sample contains 1 mg of ¹⁴C. After 11,460 years, the remaining mass will be: