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 radiations have high penetrating power and are not affected by electric and magnetic fields, we can follow these steps:

### Step 1: Understand the Types of Radiation
We need to identify the types of radiation mentioned in the options: alpha rays, beta rays, gamma rays, and neutrons. Each of these has different properties.

### Step 2: Analyze Alpha Rays
Alpha rays consist of helium nuclei (two protons and two neutrons). They have a relatively low penetrating power and are positively charged. Due to their charge, they are affected by electric and magnetic fields.

**Hint:** Alpha particles are heavy and charged, leading to low penetration and deflection in fields.

### Step 3: Analyze Beta Rays
Beta rays are electrons or positrons emitted from a nucleus. They have a higher penetrating power than alpha rays but are still charged. Therefore, they can be deflected by electric and magnetic fields.

**Hint:** Beta particles are lighter than alpha particles but still carry a charge, affecting their path in fields.

### Step 4: Analyze Gamma Rays
Gamma rays are electromagnetic radiation with very short wavelengths and high frequencies. They have no mass and no charge, which means they are not affected by electric or magnetic fields. Gamma rays have the highest penetrating power among the types of radiation.

**Hint:** Gamma rays are neutral and have the highest energy, allowing them to penetrate materials effectively.

### Step 5: Analyze Neutrons
Neutrons are neutral particles found in the nucleus of an atom. They have significant penetrating power, but they are not electromagnetic radiation. Neutrons are not affected by electric fields but can be influenced by magnetic fields under certain conditions.

**Hint:** Neutrons are neutral but can interact with matter differently than electromagnetic radiation.

### Step 6: Conclusion
Based on the analysis, gamma rays are the radiation that has high penetrating power and is not affected by electric and magnetic fields. Therefore, the correct answer is gamma rays.

**Final Answer:** Gamma rays (Option 3) are the radiations having high penetrating power and are not affected by electric and magnetic fields.