A sensor is exposed for 0.1 s to a 200 W lamp 10m away The sensor has an opening that is 20 mm in diameter. How many photons enter the sensor if the wavelength of light is 600nm? Assume that all the energy of the lamp is given off as light.

A photodiode sensor is used to measure the output of a 300 W lamp kept 10 m away. The sensor has an opening of 2 cm in diameter. How many photons enter the sensor if the wavelength of the light is 660 nm and the exposure time is 100 ms. (Assume that all the energy of the lamp is given off as light and h = 6.6 xx 10^(-34) Js )

A sensor is exposed for time t to a lamp of power P placed at a distance l. The sensor has an opening that is 4d in diameter. Assuming all energy of the lamp is given off as light, the number of photons entering the sensor if the wavelength of light is lamda is

A sensor is exposed for time t to a lamp of power P placed at a distance l. The sensor has an opening that is 4d in diameter. Assuming all energy of the lamp is given off as light, the number of photons entering the sensor if the wavelength of light is lambda is:

A sensor is exposed for time t to a lamp of power P placed at a distance l. The sensor has an opening that is 4d in diameter. Assuming all energy of the lamp is given off as light, the number of photons entering the sensor if the wavelength of light is lamda is

A monochromatic source of light operation at 200 W emits 4xx10^(20) photons per second. Find the wavelength of the light "(in" 10^(-7)m ).

How many photons of light with wavelength 400 nm can provide 1 J energy? [h=6.626xx10^(-34)J*s]

A 600 W mercury lamp emits monochromatic radiation of wavelength 331.3 nm. How many photons are emitted from the lamp per second?

Calculate the number of photons emitted by a 100 W yellow lamp in 1.0 s . Take the wavelength of yellow light as 560 nm and assume 100 percent efficiency.

Calculate the number of photons emitted by a 100 W yellow lamp in 1.0 s . Take the wavelength of yellow light as 560 nm and assume 100 percent efficiency.