Compute the threshold wavelength, Physics

Assignment Help:

Q. The work function of a metal surface is 1.8 eV. Compute the threshold wavelength.

 Work function W = hγo = h C / λ 0

λ 0 = h C / W

= 6.626 X 10-34 X 3 X 10 8 / 1.8 X 1.6 X 10 -19

= (19.878 / 2.88) X 10-7 m

= 6.902 X 10-7 m


Related Discussions:- Compute the threshold wavelength

Describe escape velocity, Q. Escape Velocity An object will conquer the...

Q. Escape Velocity An object will conquer the force of gravity when its kinetic energy in the direction away from earth exceeds its potential energy. We find the smallest kinet

Acceleration, how many seconds dose it take an elevator to travel 373m if i...

how many seconds dose it take an elevator to travel 373m if it accelerates at 4.80 m/s^2 and has a velocity of 17.8m/s how much time does it take an elevator to travel 373 meters

Classes of magnetic materials: alnico, Alnico is a family of alloys contain...

Alnico is a family of alloys containing metals Fe, Co and Ni plus small amount of Al and copper. These alloys are directionally solidified and subsequently given a heat treatment t

Gravitational field, what is Gravitational field at a distance r from the i...

what is Gravitational field at a distance r from the infinitely long rod with liner mass density d?  Please drive it Ans) use Gauss'' law of electrostatics, but replace (1/4πε0)

Evaluate the volume of water, Evaluate the volume of water in a round reser...

Evaluate the volume of water in a round reservoir approximately 1 km in radius, if the depth of the water is 15 m. Approximately how many balls with a diameter of 1.8 cm should

Determine the velocity of the mass, A 10 kilogram mass rests on a horizonta...

A 10 kilogram mass rests on a horizontal frictionless surface. A horizontal force of 5 Newtons is applied to the mass.  After the force has been applied for 1 second, the velocity

Power for the circuit, a) A circuit has a voltage of 15V and a current of 2...

a) A circuit has a voltage of 15V and a current of 2A. the phase angle is 45 degree. Verify the true power of the circuit? (Calculate apparent and true power) b) Verify the appare

Shm, if length changes then there is change in the time period how to sol...

if length changes then there is change in the time period how to solve these questions regards

Gauss law for magnetic fields, Gauss' law for magnetic fields (K.F. Gauss) ...

Gauss' law for magnetic fields (K.F. Gauss) The magnetic flux by a closed surface is zero; no magnetic charges present; in differential form, div B = 0.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd