A ray of light of wave length 6000 Aο falls on a metal plate To drag electron from the - Physics - Ray Optics And Optical Instruments

Question

A ray of light of wave length 6000 A ο falls on a metal plate
To drag electron from the metal 1 77 ev energy is required Find the
maximum energy of the emitting electron and the threshold frequency
of the metal [Given Plank's constant 'h' = 6 6 x 10-27
erg-sec]

Vijay Shankar Yadav · Accepted Answer

Dear Student,
Here thresold energy=1
77eVand thresold frequency=1 77×1 6×10-196
64×10-34=4
2×1014Hzby einstein relation we have hv=φ+KE6
64×10-34×3×108×1076-1 77eV=K EK E=1
55eV
Regards

A ray of light of wave length 6000 A ο falls on a metal plate. To drag electron from the metal 1.77 ev energy is required.Find the maximum energy of the emitting electron and the threshold frequency of the metal. [Given Plank's constant 'h' = 6.6 x 10-27 erg-sec]

A ray of light of wave length 6000 $\overset{ο}{A}$ falls on a metal plate. To drag electron from the metal 1.77 ev energy is required.Find the maximum energy of the emitting electron and the threshold frequency of the metal. [Given Plank's constant 'h' = 6.6 x 10^-27 erg-sec]