मराठी

State Two Important Properties of Photon Which Are Used to Write Einstein’S Photoelectric Equation. - Physics

Advertisements
Advertisements

प्रश्न

State two important properties of photon which are used to write Einstein’s photoelectric equation.

Advertisements

उत्तर

The properties of photon used to write Einstein’s photoelectric equation are

(i) The rest mass of the photon is zero.

(ii) The energy of the photon is E = hv.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
2015-2016 (March) All India Set 3 N

संबंधित प्रश्‍न

A proton and a deuteron are accelerated through the same accelerating potential. Which one of the two has less momentum?

Give reasons to justify your answer.


With reference to the photoelectric effect, define threshold wavelength


According to Einstein’s model, the threshold frequency for a metal having work function ϕ0 is given by _________.


A police van moving on a highway with a speed of 30 km/h fires a bullet at a thief's car speeding away in the same direction with a speed of 192 km/h. If the muzzle speed of the bullet is 150 m is, with what speed does the bullet hit the thief's car?


According to Einstein's photoelectric equation, the plot of the kinetic energy of the emitted photoelectrons from a metal Vs the frequency of the incident radiation gives as straight the whose slope:


If the energy of photon corresponding to a wavelength of 6000 A° is 3.32 × 10−19 J, the photon energy for a wavelength of 4000 A° will be ______.


What is the momentum of photon of energy 3 mev in kg ms-1?


  1. Calculate the energy and momentum of a photon in a monochromatic beam of wavelength 331.5 nm.
  2. How fast should a hydrogen atom travel in order to have the same momentum as that of the photon in part (a)?

How does stopping potential in photoelectric emission vary if the frequency of incident radiation decreases?


The graphs below show the variation of the stopping potential VS with the frequency (ν) of the incident radiations for two different photosensitive materials M1 and M2.

Express work function for M1 and M2 in terms of Planck’s constant(h) and Threshold frequency and charge of the electron (e).

If the values of stopping potential for M1 and M2 are V1 and V2 respectively then show that the slope of the lines equals to `(V_1-V_2)/(V_(01)-V_(02))` for a frequency,

ν > ν02 and also ν > ν01


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×