The threshold frequency, ν0 for a metal is 6 2 x 104 s-1 Calculate the K E of an - Chemistry - Structure of Atom

Question

The threshold frequency, ν0 for a metal is 6 2 x 104 s-1
Calculate the K E of an ejected electron when the radiation of
frequency, ν = 8 7 x 1014s-1 strikes the metal

Akanksha C. · Accepted Answer

Dear Student

Given : Threshold frequency: 6 2 x
1014 s-1

Kindly check the value of
threshold frequency It should be 6 2 x 1014 s-1 instead of 6 2 x
104 s-1

Frequency of radiation : 8
7 X 1014 s-1
K E =
hv -hv0

Kinetic energy : h (8 7 X
1014 -6 2 x 104) = 
h = 6 626 x 10-34

Js X
2 5 x
1014 s-1 = 1 6565 
x 10-19
J

The threshold frequency, ν0 for a metal is 6.2 x 104 s-1. Calculate the K.E of an ejected electron when the radiation of frequency, ν = 8.7 x 1014s-1 strikes the metal.