33. Geometric Optics
Reflection of Light
33. Geometric Optics Reflection of Light
17PRACTICE PROBLEM
Consider a light source emitting light at a frequency of 5.0 × 10 14 Hz with a power output of 90 kW in all directions. Determine the rate at which photons strike a photodetector positioned 20 km away from the light source. The photodetector has a height of 1.0 m and a diameter of 5.0 mm.
Consider a light source emitting light at a frequency of 5.0 × 10 14 Hz with a power output of 90 kW in all directions. Determine the rate at which photons strike a photodetector positioned 20 km away from the light source. The photodetector has a height of 1.0 m and a diameter of 5.0 mm.