Which of the following groups of waves in the electromagnetic spectrum is given in increasing order of frequency?

Options

A. Radio wave, IR, visible ray, UV
B. X-ray, visible ray, radio wave, IR
C. UV, visible ray, IR, Radio wave
D. IR, UV rays, radiowave, visible rays

Explanation

To solve the question regarding the increasing order of frequency of electromagnetic waves, we first need to understand the arrangement of different types of electromagnetic waves based on their frequencies.

### Step-by-Step Solution:

1. **Understanding the Electromagnetic Spectrum**:
The electromagnetic spectrum is a range of all the different frequencies of electromagnetic radiation. It includes various types of waves such as radio waves, microwaves, infrared (IR), visible light, ultraviolet (UV), X-rays, and gamma rays.

2. **Order of Waves by Frequency**:
The frequency of electromagnetic waves increases as we move from radio waves to gamma rays. The general order from lowest frequency to highest frequency is:
- Radio Waves
- Microwaves
- Infrared (IR)
- Visible Light
- Ultraviolet (UV)
- X-rays
- Gamma Rays

3. **Identifying the Correct Group**:
Given the options in the question, we need to identify which group of waves is listed in increasing order of frequency.

- **Option 1**: Radio wave, IR, Visible, UV
- **Option 2**: X-rays, Visible
- **Option 3**: UV, Visible
- **Option 4**: IR, UV, Radio waves

Analyzing these options:
- **Option 1** is correct because it follows the order: Radio Waves (lowest frequency) → Infrared (IR) → Visible Light → Ultraviolet (UV) (highest frequency).
- **Option 2** is incorrect because X-rays have a higher frequency than visible light.
- **Option 3** is incorrect because UV has a higher frequency than visible light.
- **Option 4** is incorrect because it starts with IR, which has a higher frequency than radio waves.

4. **Conclusion**:
Therefore, the correct answer is **Option 1: Radio wave, IR, Visible, UV**.