किसी धातु की देहली आवृत्‍ति 3.3xx10^(14)Hz है। यदि 8.2xx10^(14)Hz आवृत्‍ति का प्रकाश धातु पर आपत...

The threshold freqeuncy of a certain metal is 3.3xx10^(14)Hz . If light of frequency 8.2xx10^(4)Hz is incident on the metal, predict the cut off voltage for photoelectric emission. Given Planck's constant, h=6.62xx10^(-34)Js .

The threshold frequency for a certain metal is 3.3xx10^(14) Hz. If light of frequency 8.2xx10^(1) Hz (hertz) is incident on the metal , find the cut - off voltage for photoelectric emission . Given Planck's constant h = 6.625xx10^(-34) Js (joule second ) . Charge of electron e = 1.6 xx10^(-19) C (coulomb).