The radiations having high penetrating power and not affected by electrical and magnetic field are

Options

A. Alpha rays
B. Beta rays
C. Gamma rays
D. Neutrons

Answer

To solve the question regarding which type of radiation has high penetrating power and is not affected by electrical and magnetic fields, we can analyze the options provided: alpha rays, beta rays, gamma rays, and neutrons.

### Step-by-Step Solution:

1. **Understanding Radiation Types**:
- **Alpha Rays**: These are positively charged particles (helium nuclei) and have a charge of +2. Because they are charged, they will be affected by both electric and magnetic fields.
- **Beta Rays**: These are electrons or positrons, which are also charged particles. They will similarly be affected by electric and magnetic fields.
- **Gamma Rays**: These are high-energy photons and have no charge. Thus, they are not affected by electric or magnetic fields.
- **Neutrons**: Neutrons are neutral particles (no charge) and are also not affected by electric or magnetic fields.

2. **Analyzing Penetrating Power**:
- The penetrating power of these radiations can be ranked as follows:
- Gamma rays have the highest penetrating power.
- Beta rays have moderate penetrating power.
- Alpha rays have the lowest penetrating power.
- Neutrons can penetrate materials well but are not typically ranked in the same context as charged particles.

3. **Conclusion**:
- Since gamma rays are not affected by electric and magnetic fields due to their neutral charge and have the highest penetrating power, they are the correct answer to the question.

### Final Answer:
The radiation having high penetrating power and not affected by electrical and magnetic fields is **Gamma Rays**.

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