How many photons of lights having a wave length of `5000 A` are necessary to provide `1` Joule of energy?

Explanation

To solve the problem of how many photons of light with a wavelength of 5000 Å (angstroms) are necessary to provide 1 Joule of energy, we can follow these steps:

### Step 1: Convert Wavelength to Meters
The wavelength given is in angstroms. We need to convert it to meters for our calculations.
- 1 Å = \(10^{-10}\) meters
- Therefore, \(5000 \, \text{Å} = 5000 \times 10^{-10} \, \text{m} = 5.0 \times 10^{-7} \, \text{m}\)

### Step 2: Use the Energy of a Photon Formula
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