The radiation suffering the maximum deflection in a magnetic field is :

Options

A. `alpha`-particles
B. `beta`-particles
C. X-rays
D. `gamma` radiations.

Answer

To determine which type of radiation suffers the maximum deflection in a magnetic field, we can analyze the properties of the different types of radiation mentioned in the question.

### Step-by-Step Solution:

1. **Identify the Types of Radiation**:
The options given are:
- Alpha particles
- Beta particles
- X-rays
- Gamma radiations

2. **Understand the Nature of Each Radiation**:
- **Alpha particles**: These are positively charged particles (helium nuclei) and have a relatively large mass.
- **Beta particles**: These are high-energy, high-speed electrons or positrons, which are negatively charged (in the case of electrons).
- **X-rays**: These are electromagnetic radiation and have no charge.
- **Gamma rays**: These are also electromagnetic radiation and have no charge.

3. **Consider the Effect of a Magnetic Field**:
- Charged particles are deflected in a magnetic field, while neutral particles (like X-rays and gamma rays) are not deflected at all.
- The amount of deflection depends on the charge and mass of the particle. The greater the charge-to-mass ratio, the greater the deflection.

4. **Compare Charge-to-Mass Ratios**:
- **Alpha particles**: Positive charge, larger mass → lower charge-to-mass ratio.
- **Beta particles**: Negative charge, very low mass → higher charge-to-mass ratio.
- **X-rays and Gamma rays**: No charge → no deflection.

5. **Conclusion**:
Since beta particles have a higher charge-to-mass ratio compared to alpha particles, they will experience greater deflection in a magnetic field. Therefore, the radiation suffering the maximum deflection in a magnetic field is **beta particles**.

### Final Answer:
The radiation suffering the maximum deflection in a magnetic field is **beta particles** (Option 2).

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