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

Explain photon, According to Eisenstein's quantum theory light propagates i...

According to Eisenstein's quantum theory light propagates in the bundles of power, every packet being called as photon and possessing energy.

Explain longitudinal waves, Longitudinal Waves: The traveling waves in ...

Longitudinal Waves: The traveling waves in which particles of the elastic medium vibrate about back and forth along the direction of propagation of waves are called longitudina

Explain simple pendulum, If a great point-mass is removed by a weightless, ...

If a great point-mass is removed by a weightless, inextensible and perfectly flexible string from a rigid support, then this arrangement is known as a simple pendulum.

The number of electrons in one molecule of are, The number of electrons in ...

The number of electrons in one molecule of are: (1)22      (2)44      (3)66     (4)88 Ans: 22

Excitation of modes in fiber, Excitation of Modes in Fiber A mul...

Excitation of Modes in Fiber A multimode fiber is used to couple light into a single mode fiber. Both fibers have the same total diameter. Explain the coupling. Use

Determine phase of a delta-connected load, Each phase of a delta-connected ...

Each phase of a delta-connected load comprises a resistance of 30Ω and an 80µF capacitor in series. The load is connected to a 400V, 50Hz, 3-phase supply. Calculate (

Explain term pitch, Pitch: It is the characteristics of a sound by whic...

Pitch: It is the characteristics of a sound by which we can distinguish among a grave and shrill sound is known as pitch. It depends on frequency of the vibrating body and expr

Clamper, please discuss problem related to clamper.

please discuss problem related to clamper.

Expression for the period of oscillation of a bar magnet, Derive a mathemat...

Derive a mathematical expression for the period of oscillation of a bar magnet in vibration magnetometer. How do you differentiate Dia, Para and Ferromagnetisms in matter.

What is conserved in newtons second law of motion?, Because force=dp/dt and...

Because force=dp/dt and force=0 in first law of motion =>   dp/dt=0 =>  p=const. or linear momentum is conserved.

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