Knockout JEE Main April 2021 (One Month)
Personalized AI Tutor and Adaptive Time Table, Self Study Material, Weekend Live Classes, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.
What is the work function of the metal if the light of wavelength generates photoelectrons of velocity
from it ?
(Mass of electron =
Velocity of light =
Planck's constant =
Charge of electron = )
0.9eV
3.1eV
2.1eV
4.0eV
Personalized AI Tutor and Adaptive Time Table, Self Study Material, Weekend Live Classes, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.
Personalized AI Tutor and Adaptive Time Table, Self Study Material, Weekend Live Classes, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.
Unlimited Chapter Wise Tests, Unlimited Subject Wise Tests, Unlimited Full Mock Tests, Get Personalized Performance Analysis Report,.
Personalized AI Tutor and Adaptive Time Table, Self Study Material, Weekend Live Classes, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.
Booster and Kadha Video Lectures, Unlimited Full Mock Test, Adaptive Time Table, 24x7 Doubt Chat Support,.
De-broglie wavelength -
- wherein
where m is the mass of the particle
v its velocity
p its momentum
Total energy of elctron in nth orbit -
Where z is atomic number
As we have learned in work function
Option 1)
0.9eV
Option 2)3.1eV
Option 3)2.1eV
Option 4)4.0eV