A 100 watt bult emits monochromatic light of wavelength 400 nm. Calcualte the number of photons emitted per second by the bulb.

Explanation

To solve the problem of calculating the number of photons emitted per second by a 100-watt bulb that emits monochromatic light of wavelength 400 nm, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Given Information:**
- Power of the bulb (P) = 100 watts
- Wavelength of light (λ) = 400 nm = 400 x 10^-9 meters (convert nanometers to meters)

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