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If electrons are accelerated from rest through a potential difference of 10 kV, what is the wavelength of the associated electron? [m = 9.1 x 10-31kg, e = 1.6 x 10-19C, h = 6.6 x 10-34Js]
Caesium has a work function of 3 x 10-19J. The maximum energy of liberated electrons when it is illuminated by light of frequency 6.7 x 1014 Hz is [h = 6.6 x 10-35Js]
Zener diode is used for
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