Question
What is the work function of the metal if the light of wavelength 4000$\mathop A\limits^ \circ $ generates photoelectrons of velocity 6 $ \times $ 105 ms–1 from it ?
(Mass of electron = 9 $ \times $ 10–31 kg;
Velocity of light = 3 $ \times $ 108 ms$-$1
Plank's constant = 6.626 $ \times $ 10–34 Js;
Charge of electron = 1.6 $ \times $10–19 JeV–1)
(Mass of electron = 9 $ \times $ 10–31 kg;
Velocity of light = 3 $ \times $ 108 ms$-$1
Plank's constant = 6.626 $ \times $ 10–34 Js;
Charge of electron = 1.6 $ \times $10–19 JeV–1)