Question

Kinetic energy of an electron emitted when radiation
of frequency v = 1.25 x 10^15s-1 strikes the
metal surface whose threshold frequency vo is
7.25 ×10^14s-1, is (h= 6.626 X 10^-34 J sec)
(1) 1.98 x 10-19 J (2) 3.46 10-19 J
(3) 12.5 × 10-19 J (4) 5 × 10-19 J​

Answer 1

Answer:

option b is the right answer please mark as brain list. if you like the solution