There are three wavelengths, `10^(6)m, 10^(-10) m and 10^(-7)` m find their respective names :

Options

A. Radiowaves, X-rays, visible rays
B. X-ray, visible ray, radiowave,
C. Visible ray, G-ray. `beta`-ray
D. X-ray. y-ray, radiowave.

Answer

To find the names of the given wavelengths, we will categorize them according to the electromagnetic spectrum. Let's analyze each wavelength step by step.

### Step 1: Identify the first wavelength, \(10^6 \, \text{m}\)

- **Analysis**: The wavelength of \(10^6 \, \text{m}\) is very large.
- **Category**: According to the electromagnetic spectrum, any wavelength greater than \(1 \, \text{mm}\) (or \(10^{-3} \, \text{m}\)) falls under the category of radio waves.
- **Conclusion**: Therefore, \(10^6 \, \text{m}\) is classified as **Radio Waves**.

### Step 2: Identify the second wavelength, \(10^{-10} \, \text{m}\)

- **Analysis**: The wavelength of \(10^{-10} \, \text{m}\) is very small.
- **Category**: This wavelength is in the range of X-rays, which typically range from \(1 \, \text{nm}\) (or \(10^{-9} \, \text{m}\)) to \(1 \, \text{pm}\) (or \(10^{-12} \, \text{m}\)).
- **Conclusion**: Therefore, \(10^{-10} \, \text{m}\) is classified as **X-rays**.

### Step 3: Identify the third wavelength, \(10^{-7} \, \text{m}\)

- **Analysis**: The wavelength of \(10^{-7} \, \text{m}\) is also small.
- **Category**: This wavelength falls within the visible spectrum, which ranges from approximately \(400 \, \text{nm}\) (or \(4 \times 10^{-7} \, \text{m}\)) to \(750 \, \text{nm}\) (or \(7.5 \times 10^{-7} \, \text{m}\)).
- **Conclusion**: Therefore, \(10^{-7} \, \text{m}\) is classified as **Visible Light**.

### Final Summary

- \(10^6 \, \text{m}\) → **Radio Waves**
- \(10^{-10} \, \text{m}\) → **X-rays**
- \(10^{-7} \, \text{m}\) → **Visible Light**