Light of wavelength `5000Å` falls on a plane reflecting surface. What are the wavelength and frequency of reflected light ? For what angle of incidence is the reflected ray normal to the incident ray ?

Explanation

To solve the problem, we will follow these steps:

### Step 1: Convert the wavelength from Angstroms to meters
The given wavelength of light is \(5000 \, \text{Å}\). We need to convert this to meters.

\[ \lambda = 5000 \, \text{Å} = 5000 \times 10^{-10} \, \text{m} = 5 \times 10^{-7} \, \text{m} \]
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