What is the correct sequence of following electromagnetic radiation arranged in the increasing radiation in the increasing order of energy ?
1. X - rays
2. Visible light
3. `gamma` - rays
Select the correct answer using the codes given below

Options

A. 1,3,2
B. 1,2,3
C. 3,1,2
D. 2,1,3

Answer

To determine the increasing order of energy for the given electromagnetic radiations, we need to understand the relationship between energy, frequency, and wavelength in the electromagnetic spectrum.

### Step-by-Step Solution:

1. **Understand the Electromagnetic Spectrum**:
The electromagnetic spectrum is arranged in order of increasing wavelength and decreasing frequency. The order from low energy to high energy is as follows:
- Radio waves
- Microwaves
- Infrared
- Visible light
- Ultraviolet
- X-rays
- Gamma rays

2. **Identify the Given Radiations**:
The radiations we need to arrange are:
- X-rays
- Visible light
- Gamma rays

3. **Determine Energy Order**:
- **Gamma rays** have the highest energy and the shortest wavelength.
- **X-rays** have higher energy than visible light but lower than gamma rays.
- **Visible light** has the lowest energy among the three.

4. **Arrange in Increasing Order of Energy**:
Based on the energy levels:
- Visible light (lowest energy)
- X-rays (medium energy)
- Gamma rays (highest energy)

5. **Final Sequence**:
Therefore, the correct sequence in increasing order of energy is:
- Visible light (2) < X-rays (1) < Gamma rays (3)

### Conclusion:
The correct answer is: **Visible light (2) < X-rays (1) < Gamma rays (3)**.