A beam of light consists of four wavelength `4000Å , 4800 A, 6000 A` and `7000 Å`, each of intensity `1.5xx10^(-3)Wm^(-2)`. The beam falls normally on an area `10^(-4)m^(2)` of a clean metalic surface of work function `1.9 eV`. Assuming no loss of light energy (i.e. each capable photon emits one electron) calculate the number of photoelectrons liberated per second.

A beam of light has two wavelengths 4,972Å and 6,216Å with a total intensity of 3.6xx10^(-3) W m^(-2) equally distributed among the two wavelengths . The beam falls normally on an area of 1 cm^2 of clean metallic surface of work function 2.3 eV . Assume that there is no loss of light by reflection and that each capable photon ejects one electron. The number of photoelectrons liberated in 2 s is approximately

A beam of light has three wavelengths 4144 Å , 4972 Å and 6216 Å with a total instensity of 3.6 xx 10^(-3) Wm^(-2) equally distributed amongst the three wavelengths. The beam falls normally on an area 1.0 cm^2 of a clean metallic surface of work function 2.3 eV. Assume that there is no loss of light by reflection and that each energetically capable photon ejects on electron. Calculate the number of photo electrons liberated in two seconds.

A beam of light has three wavelengths 4144 Å , and 6216 Å with a total instensity of 3.6 xx 10^(-3) Wm^(-2) equally distributed amongst the three wavelengths. The beam falls normally on an area 1.0 cm^2 of a clean metallic surface of work function 2.3 eV. Assume that there is no loss of light by reflection number of photoelectrons liberated in two seconds.

A beam of light has three wavelengths 4000 Å, 5000 Å, 6000Å with a total intensity 3 xx 10^(-3) W//m^(2) equally distributed amongst the three wavelenth. The beam falls normally on an area 2 cm^(2) of clean metallic surface of work function 2.4 eV . Calculate photo current. (Assume each energetically suitable photon emits one electron)

A beam of light has three wavelengths 4000 Å, 5000 Å, 6000Å with a total intensity 3 xx 10^(-3) W//m^(2) equally distributed amongst the three wavelenth. The beam falls normally on an area 2 cm^(2) of clean metallic surface of work function 2.4 eV . Calculate photo current. (Assume each energetically suitable photon emits one electron)

A beam of light has three wavelengths 4000 Å, 5000 Å, 6000Å with a total intensity 3 xx 10^(-3) W//m^(2) equally distributed amongst the three wavelenth. The beam falls normally on an area 2 cm^(2) of clean metallic surface of work function 2.4 eV . Calculate photo current. (Assume each energetically suitable photon emits one electron)

A beam of light has three lambda, 4144 "Å", 4972 "Å" "and"6216 "Å" with a total intensity of 3.6 xx10^(-3) Wm^(-2) equally distributed amongst the three lambda. The beam falls normally on an area 1.0 cm^(2) of a cleam metallic surface of work function 2.3 eV. Assume that there is no loss of light by reflection etc. Calculate the no. of photoelectrons emitted in 2 sec, in scientific notation, x xx 10^(y) find the value of y.

Light of wavelenght 5000 Å fall on a metal surface of work function 1.9 eV Find a. The energy of photon b. The kinetic energy of photoelectrons