Energy from the sun is recived on earth at the rate of `2` cal per `cm^(2)` per min. If avergae wavelength of solar light be taken at `5500 A` then how many photons are recived on the earth per `cm^(2)` per min ?
`(h =6.6 xx 10^(-34)J-s, 1cal = 4.2J)`

Energy from the sun is received on the earth at the rate of 9J//cm^(2)// minute. The average wavelength of solar light is taken as 5500 Å. How many photons are received on the earth per cm^(2) per minute? [h=6.6xx10^(-34)J-s]

How many photons are received on earth per cm^-2 per hour if the energy from the sun reaching on the earth is at the rate of 2cal cm^(-2) min^(-1) and average wavelength of solar light be taken as 5500Å. Use h=6.6xx10^(-34)J , c=3xx10^8ms^(-1) and 1cal =4,2J

How many photons of wavelength , 50 Å are required to produce 0.2 J of energy ? ( h = 6.626 xx 10^(-34) J *s )

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

The energy flux of sunlight reaching the surface of the earth is 1.388xx10^(3)Wm^(-2) . The photons in the sunlight have an average wavelength of 550 nm. How many photons per square metre are incident on the earth per second ?

The energy flux of sunlight reaching the surface of the earth is 1.388xx10^(3)Wm^(-2) . The photons in the sunlight have an average wavelength of 550 nm. How many photons per square metre are incident on the earth per second ?

Earth receives energy at the rate of 2.5"cal /cm"^2 min . Calculate the number of photons received on the Earth. Per cm^2 per minute if the average wavelength of solar light is 500 nm. Take 1 calorie = 4.2 J

Solar constant of the sun is the energy received by earth per minute per cm^(2) . Its dimensions will be :