Photon And Matter Waves

Energy of a photon is given by: Where is Planck’s constant, is the speed of light, and is the wavelength.
- Blue light has shorter wavelength than red light, so energy per photon of blue light is greater than that of red light.
- Intensity is the total energy per unit area per unit time. If both beams have the same intensity, then:
- Since red photons have less energy, more of them are required to deliver the same intensity.
Therefore, the red beam has a greater number of photons than the blue beam. Final answer: The red beam has more number of photons than the blue beam.