How many photons of light will travel through the pinhole?

Calculating the Number of Photons Passing Through the Pinhole

The energy of a single photon: The energy of a single photon can be calculated using the formula E=hc/λ, where h is Planck’s constant (6.626 x 10^-34 Js), c is the speed of light (3 x 10^8 m/s), and λ is the wavelength of the light (633 nm, which must be converted to meters by multiplying by 10^-9).

Total number of photons emitted by the laser: To determine how many photons make up the laser's total energy output, we divide the total energy output of the laser (5.00 W) by the energy of a single photon.

Ratio of photons passing through the pinhole: As the laser beam is larger than the pinhole, not all photons will enter the pinhole. If the intensity of the beam is evenly distributed, the ratio of the beam's area to the pinhole's area will give us the ratio of the photons that pass through the pinhole relative to the total number.

To calculate the exact number of photons of light that will travel through the pinhole, we need to perform the necessary mathematical calculations based on the given data about the laser and the pinhole dimensions.