Electronic Devices and Circuits - Engineering

Q1:

Which of the following is true as regards photo emission?

A Velocity of emitted electrons is dependent on light intensity

B Rate of photo emission is inversely proportional to light intensity

C Maximum velocity of electron increases with decreasing wave length

D Both holes and electrons are produced

ANS:C - Maximum velocity of electron increases with decreasing wave length

As wavelength decreases, frequency increases and maximum velocity of electron increases.