Physics
In a radioactive decay, the atomic number of parent nuclei is not changed. The radiation emitted will be
- β-rays
- γ-rays
- α-rays
- the atomic number is affected by all forms of radioactive decay
Answer
γ-rays
Reason — Gamma decay involves the emission of gamma rays, which are high-energy electromagnetic waves. Gamma decay doesn't change the atomic number or mass number of the nucleus. It is often emitted after other types of decay (such as alpha or beta decay) to release excess energy.
Related Questions
The force of 20 N is applied at distance of 40 cm from the axis. The moment of force is
- 8 N-m
- 0.4 N-m
- 8.5 N-m
- 20 N-m
When the displacement is along the opposite direction of the force, then the work is said to be
- zero
- negative
- positive
- infinite
Assertion A ray of light passing through the centre of curvature of a concave mirror is reflected back along the same path.
Reason The incident ray, the reflected ray and the normal at the point of incidence lie on the same plane.
- Both Assertion and Reason are true.
- Both Assertion and Reason are false.
- Assertion is false but Reason is true.
- Assertion is true but Reason is false.