Work, Power and EnergyHard
Question
When a metal surface of work function φ0 is illuminated with the light of frequency v, the maximum kinetic energy of photo-electrons is E. If frequency is made 2v then maximum kinetic energy of photo-electrons will be :-
Options
A.2E
B.2E - φ0
C.2E + φ0
D.2E + 2φ0
More Work, Power and Energy Questions
Which statement are not correct- [a] A body can have momentum without kinetic energy. [b] Mechanical energy conservation...The power of a pump which can pump 200 kg of water to a height of 200 m in 10s is (g = 10 m/s2):-...A particle of mass m is moving in a circular path of constant radius r such that its centrip-etal acceleration ac is var...A particle of mass m is initially at rest at the origin. It is subjected to a force and starts moving along the x-axis. ...A body of mass is slowly halved up the rough hill by a force F at which each point is directed along a tangent to the hi...