To which regions of the electromagnetic spectrum do the following wavelengths belong :
(a) 1500 nm 

Explanation

To determine the region of the electromagnetic spectrum to which a wavelength of 1500 nm belongs, we can follow these steps:

### Step 1: Convert the wavelength to meters
Given that the wavelength is 1500 nm, we can convert it to meters for easier comparison with the ranges of the electromagnetic spectrum.

\[ 1500 \, \text{nm} = 1500 \times 10^{-9} \, \text{m} = 1.5 \times 10^{-6} \, \text{m} \]
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