Question

The kinetic energy of the electron emitted when light of frequency 3.5>< 10^15 Hz falls on a metal surface having threshold frequency, 1.5>< 10^15 Hz is? (h= 6.6>< 10^-34 Js):
a) 1.32><10^-18J
b) 3.3><10^-18J
c) 6.6><10^-19J
d) 1.98><10^-19J

Answer 1

Answer:

A

Explanation:

If you want explanation please comment for explanation