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

Name the particles that flow towards the cathode, A high voltage applied to...

A high voltage applied to a gas discharge tube having neon gas at very low pressure causes a current to flow through the tube.   Which particles that flow towards the cathode?

Explain concpet of friction, A 0.17-kg hockey puck leaves the stick on a sl...

A 0.17-kg hockey puck leaves the stick on a slap shot travelling 21 m/s. If no other forces act on the puck, friction eventually will bring it to rest 62 m away. a. Based on th

Electrostatics, An uncharged capacitor with a solid dielectric is connected...

An uncharged capacitor with a solid dielectric is connected to a similar air capacitor charged to a potential of V0. If the common potential after sharing of charges becomes V, the

Geometrized units, Geometrized units: A system of units in which certa...

Geometrized units: A system of units in which certain fundamental constants (G, c, k, and h) are set to unity. It makes calculations in certain theories, such like general rel

Define threshold frequency, Q Define threshold frequency? The minimum ...

Q Define threshold frequency? The minimum frequency of incident radiation lower which the photoelectric emission isn't possible completely but high the intensity of incident r

Moment of thin spherical shell about axis, Moment of Thin Spherical Shell A...

Moment of Thin Spherical Shell About Axis This problem can be set up in spherical coordinates so that conversions from Cartesian coordinates are not required. The mass element

Banking of road, what do you mean by banking of roads?why is it done?a trai...

what do you mean by banking of roads?why is it done?a train has to negotiate a curve of radius 400m.by how must the outer rail is raised as compared with the inner rail for a speed

Advantages of high transmission voltage, Advantages of high transmission vo...

Advantages of high transmission voltage  A) Decreases volume of conductor material: B) Enhance in transmission efficiency C) Reduces percentages line drop

An electric dipole is held in a uniform electric field, An electric dipole ...

An electric dipole is held in a uniform electric field. (1) Using suitable diagram, show that it does not undergo any translatory motion, and (2) derive an expression for the

Dielectric, what is electronic polarization?

what is electronic polarization?

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