Which of the following radiations `alpha,beta and gamma` are :
(ii) easily absorbed by matter

Explanation

To determine which of the following radiations (alpha, beta, and gamma) is easily absorbed by matter, we can analyze the properties of each type of radiation.

### Step-by-Step Solution:

1. **Identify the Nature of Each Radiation**:
- **Alpha Radiation**: Consists of 2 protons and 2 neutrons (He nucleus). It has a relatively large mass and a positive charge.
- **Beta Radiation**: Consists of electrons (beta negative) or positrons (beta positive). It has a much smaller mass compared to alpha particles and carries a negative or positive charge.
- **Gamma Radiation**: Electromagnetic radiation (photons) with no mass and no charge. It is highly penetrating.
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