0
You visited us 0 times! Enjoying our articles? Unlock Full Access!
Question

Ultraviolet beam of wavelength $$280\ nm$$ is incident on lithium surface of work function $$2.5\ eV$$. The maximum velocity of electron emitted from metal surface is

A
$$8.2\times 10^{5} m/s$$
B
$$7\times 10^{5} m/s$$
C
None of these
D
$$10^{6} m/s$$
Solution
Verified by Toppr

Correct option is A. $$8.2\times 10^{5} m/s$$

Was this answer helpful?
3
Similar Questions
Q1
Ultraviolet beam of wavelength $$280\ nm$$ is incident on lithium surface of work function $$2.5\ eV$$. The maximum velocity of electron emitted from metal surface is
View Solution
Q2
The maximum velocity of an electron emitted by light of wavelength λ incident on the surface of a metal of work function ϕ is
View Solution
Q3
The maximum velocity of an electron emitted by light of wavelength λ incident on the surface of a metal of work-function ϕ is
View Solution
Q4
Hundred photons each of energy $$2.5\ eV$$ are incident on a metal plate whose work function is $$4\ eV$$, then the number of electrons emitted from metal surface will be
View Solution
Q5
The work function of metal is 1 eV. Light of wavelength 3000˚A is incident on this metal surface. The velocity of emitted photo electrons will be
View Solution