English

Plot a Graph to Show the Variation of Stopping Potential with Frequency of Incident Radiation in Relation to Photoelectric Effect. - Physics

Advertisements
Advertisements

Question

Plot a graph to show the variation of stopping potential with frequency of incident radiation in relation to photoelectric effect.

One Line Answer
Advertisements

Solution 1

Due to increase in frequency there is increase in K.E. of electron. 

So stopping potential increases with increase in frequency of incides ralation. 

shaalaa.com

Solution 2

shaalaa.com

Solution 3

shaalaa.com
Photoelectric Effect and Wave Theory of Light
  Is there an error in this question or solution?
2018-2019 (March) 55/3/3

RELATED QUESTIONS

A photographic film is coated with a silver bromide layer. When light falls on this film, silver bromide molecules dissociate and the film records the light there. A minimum of 0.6 eV is needed to dissociate a silver bromide molecule. Find the maximum wavelength of light that can be recorded by the film.

(Use h = 6.63 × 10-34J-s = 4.14 × 10-15 eV-s, c = 3 × 108 m/s and me = 9.1 × 10-31kg)


In an experiment on photoelectric effect, light of wavelength 400 nm is incident on a cesium plate at the rate of 5.0 W. The potential of the collector plate is made sufficiently positive with respect to the emitter, so that the current reaches its saturation value. Assuming that on average, one out of every 106 photons is able to eject a photoelectron, find the photocurrent in the circuit.


A horizontal cesium plate (φ = 1.9 eV) is moved vertically downward at a constant speed v in a room full of radiation of wavelength 250 nm and above. What should be the minimum value of v so that the vertically-upward component of velocity is non-positive for each photoelectron?

(Use h = 6.63 × 10-34J-s = 4.14 × 10-15 eV-s, c = 3 × 108 m/s and me = 9.1 × 10-31kg)


In an experiment on photoelectric effect, the emitter and the collector plates are placed at a separation of 10 cm and are connected through an ammeter without any cell. A magnetic field B exists parallel to the plates. The work function of the emitter is 2.39 eV and the light incident on it has wavelengths between 400 nm and 600 nm. Find the minimum value of B for which the current registered by the ammeter is zero. Neglect any effect of space charge.


In the case of a photo electric effect experiment, explain the following facts, giving reasons.
The wave theory of light could not explain the existence of the threshold frequency.


In Photoelectric effect ______.


For a given frequency of light and a positive plate potential in the set up below, If the intensity of light is increased then ______.


When a beam of 10.6 eV photons of intensity 2.0 W/m2 falls on a platinum surface of area 1.0 × 10-4 m2, only 53% of the incident photons eject photoelectrons. The number of photoelectrons emitted per second is ______.


The electromagnetic theory of light failed to explain ______.


In photoelectric effect, the photoelectric current


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×