Which of the following rays has minimum frequency?

Options

A. U.V rays
B. X-rays
C. microwaves
D. infrared rays

Answer

To determine which of the given rays has the minimum frequency, we can analyze the electromagnetic spectrum and the relative frequencies of the different types of rays provided in the options: UV rays, X rays, microwaves, and infrared rays.

### Step-by-Step Solution:

1. **Understand the Electromagnetic Spectrum**: The electromagnetic spectrum is a range of all the different frequencies of electromagnetic radiation. It includes various types of rays, listed from highest frequency to lowest frequency.

2. **List the Types of Rays in Order of Frequency**:
- Cosmic rays
- Gamma rays
- X rays
- UV rays (Ultraviolet rays)
- Visible light
- Infrared rays
- Microwaves
- Radio waves

3. **Identify the Given Options**: The options provided are:
- UV rays
- X rays
- Microwaves
- Infrared rays

4. **Compare the Frequencies of the Given Rays**:
- X rays have a higher frequency than UV rays.
- UV rays have a higher frequency than infrared rays.
- Infrared rays have a higher frequency than microwaves.

5. **Determine the Ray with Minimum Frequency**: Among the options:
- UV rays > X rays > Infrared rays > Microwaves
- Therefore, microwaves have the lowest frequency among the given options.

6. **Conclusion**: The ray with the minimum frequency among the options provided is **Microwaves**.

### Final Answer:
The ray with the minimum frequency is **Microwaves**.

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