Electromagnetic radiation with maximum wavelength is

Options

A. ultraviolet
B. radiowave
C. X-rays
D. infrared

Answer

To solve the question regarding which type of electromagnetic radiation has the maximum wavelength, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Electromagnetic Spectrum**: The electromagnetic spectrum consists of various types of radiation arranged according to their wavelengths and frequencies. The types of electromagnetic radiation include radio waves, microwaves, infrared, visible light, ultraviolet (UV) rays, X-rays, and gamma rays.

2. **Know the Relationship Between Wavelength and Frequency**: Wavelength (λ) and frequency (ν) are inversely related. This means that as the frequency increases, the wavelength decreases, and vice versa. The formula that represents this relationship is:
\[ c = λν \]
where \( c \) is the speed of light.

3. **Arrange the Types of Radiation**: We can arrange the types of electromagnetic radiation in order of increasing frequency (or decreasing wavelength):
- Radio Waves
- Microwaves
- Infrared
- Visible Light
- Ultraviolet (UV) Rays
- X-rays
- Gamma Rays

4. **Identify the Radiation with Maximum Wavelength**: From the arrangement, we can see that radio waves have the longest wavelength, while gamma rays have the shortest wavelength. Therefore, the type of electromagnetic radiation with the maximum wavelength is:
- **Radio Waves**

5. **Conclusion**: Based on the analysis, the answer to the question "Electromagnetic radiation with maximum wavelength is" is **Radio Waves**.