Learn to Create a Robotic Device Using Arduino in the Free Webinar. Register Now
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-1023-196
+91-120-4616500
CART 0
Use Coupon: CART20 and get 20% off on all online Study Material
Welcome User
OR
LOGIN
Complete Your Registration (Step 2 of 2 )
Free webinar on Robotics (Block Chain) Learn to create a Robotic Device Using Arduino
30th Jan @ 5:00PM for Grade 1 to 10
electrons are emitted with zero velocity from a certain metal surface when it is exposed to radiations of wavelength 7000 A 0 . The work function of the metal is ? electrons are emitted with zero velocity from a certain metal surface when it is exposed to radiations of wavelength 7000 A0 . The work function of the metal is ?
c = νλ∴ νo = c/λo = 3.0×108 ms-1/7000×10-10 m = 4.29×1014 s-1Work function (wo) = hνo = 6.626×10-34 Js×4.29×1014 s-1 = 2.842×10-19 J
E=hc/lambda. also E=hvoC/lambda= vo3 x 10^8 / 7000 x 10^-10 . ( 1 A = 10-10)vo = 4.281 x 10^14 s^-1w0 = hv0 = 6.63* 10^-34 * 4.28*10^14=> 28.41 *10^-20 J
Post Question
Dear , Preparing for entrance exams? Register yourself for the free demo class from askiitians.
points won -