Correct order of wavelength of radiowaves, microwaves, xrays, visible rays

Options

A. xray`lt`visible`lt`microwaves`lt`radiowaves
B. visible`lt`x-ray`lt` radiowaves`lt`microwaves
C. microwaves`lt`xray`lt`radiowaves`lt`visible
D. none

Answer

To determine the correct order of wavelength for radiowaves, microwaves, X-rays, and visible rays, we need to understand the general wavelength ranges for each type of electromagnetic radiation.

### Step-by-Step Solution:

1. **Identify the Wavelength Ranges**:
- **X-rays**: The wavelength of X-rays is typically in the range of \(10^{-10}\) meters (or 0.1 nanometers).
- **Visible Light**: The wavelength of visible light ranges from approximately \(4 \times 10^{-7}\) meters (400 nm) to \(7 \times 10^{-7}\) meters (700 nm).
- **Microwaves**: Microwaves have longer wavelengths, generally in the range of \(10^{-2}\) meters (or 1 centimeter).
- **Radiowaves**: Radiowaves have the longest wavelengths, which can range from \(10^{-1}\) meters (10 centimeters) to \(10^{2}\) meters (100 meters).

2. **Arrange the Wavelengths in Order**:
- From the smallest to the largest wavelength, we can arrange them as follows:
- X-rays: \(10^{-10}\) m (smallest)
- Visible Light: \(4 \times 10^{-7}\) m to \(7 \times 10^{-7}\) m
- Microwaves: \(10^{-2}\) m
- Radiowaves: \(10^{2}\) m (largest)

3. **Final Order**:
- Therefore, the correct order of wavelengths from shortest to longest is:
- X-rays < Visible Light < Microwaves < Radiowaves

### Conclusion:
The correct order of wavelength is:
**X-rays < Visible Light < Microwaves < Radiowaves**.