Arrange the increasing order of penetration power of particles

Options

A. `alpha , beta, gamma`
B. `beta,alpha , gamma`
C. `gamma, alpha , beta`
D. `gamma, beta , alpha`

Answer

To solve the question of arranging the increasing order of penetration power of particles, we need to understand the concept of penetration power and the types of radiation involved.

### Step-by-Step Solution:

1. **Understand Penetration Power**:
- Penetration power refers to the ability of a particle or radiation to pass through matter. The greater the penetration power, the more material it can pass through before being absorbed or stopped.

2. **Identify the Types of Particles**:
- The common types of particles/radiation we are considering are:
- Alpha particles (α)
- Beta particles (β)
- Gamma rays (γ)

3. **Rank the Penetration Power**:
- **Alpha Particles (α)**: These are relatively heavy and positively charged particles. They have low penetration power and can be stopped by a sheet of paper or even a few centimeters of air.
- **Beta Particles (β)**: These are lighter and can penetrate further than alpha particles. They can pass through paper but are stopped by a few millimeters of plastic or glass.
- **Gamma Rays (γ)**: These are electromagnetic waves and have the highest penetration power. They can pass through most materials, including human tissue, and require dense materials like lead or several centimeters of concrete to be effectively stopped.

4. **Arrange in Increasing Order**:
- Based on the above understanding, we can arrange the particles in order of increasing penetration power:
- Alpha particles (least penetration)
- Beta particles (moderate penetration)
- Gamma rays (most penetration)

5. **Final Arrangement**:
- Therefore, the increasing order of penetration power is:
- Alpha particles < Beta particles < Gamma rays