The correct order of increasing frequency of electromagnetic radiations is

Options

A. `MicrowaveltUVltIRlt'gamma-rays`
B. `Microwave ltRadiowave lt Visible lt X-rays`
C. `UVlt Radiowave lt X-rays lt gamma-rays`
D. `Radiowave ltIR ltVisible ltX-rays`

Answer

To determine the correct order of increasing frequency of electromagnetic radiations, we need to understand the electromagnetic spectrum and the relative frequencies of different types of radiation. The electromagnetic spectrum is typically arranged from the lowest frequency to the highest frequency as follows:

1. **Radio Waves** - These have the lowest frequency and the longest wavelength.
2. **Microwaves** - These have a higher frequency than radio waves.
3. **Infrared Radiation** - This follows microwaves in frequency.
4. **Visible Light** - This is the range of electromagnetic radiation that can be detected by the human eye.
5. **Ultraviolet Radiation** - This has a higher frequency than visible light.
6. **X-rays** - These have a higher frequency than ultraviolet radiation.
7. **Gamma Rays** - These have the highest frequency and the shortest wavelength.

Now, let's write the order from lowest to highest frequency:

1. Radio Waves
2. Microwaves
3. Infrared Radiation
4. Visible Light
5. Ultraviolet Radiation
6. X-rays
7. Gamma Rays

Thus, the correct order of increasing frequency of electromagnetic radiations is:

**Radio Waves < Microwaves < Infrared < Visible Light < Ultraviolet < X-rays < Gamma Rays**