Name the radiations :
whose wavelength range is from 100 Å to 4000 Å (or 10 nm to 400 nm).

Explanation

To solve the question regarding the name of the radiations whose wavelength range is from 100 Å to 4000 Å (or 10 nm to 400 nm), we can follow these steps:

### Step-by-Step Solution:

1. **Convert Angstroms to Meters**:
- 1 Ångström (Å) = \(10^{-10}\) meters.
- Therefore, 100 Å = \(100 \times 10^{-10}\) m = \(10^{-8}\) m.
- And, 4000 Å = \(4000 \times 10^{-10}\) m = \(40 \times 10^{-8}\) m = \(4 \times 10^{-7}\) m.
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