हिंदी

Define the Term: Stopping Potential in the Photoelectric Effect. - Physics

Advertisements
Advertisements

प्रश्न

Define the term: stopping potential in the photoelectric effect.

परिभाषा

उत्तर

The stopping potential is defined as the potential necessary to stop any electron from reaching the other side.

shaalaa.com
Experimental Study of Photoelectric Effect
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
2018-2019 (March) 55/1/3

संबंधित प्रश्न

Define the term 'intensity of radiation' in terms of photon picture of light.


The photoelectric cut-off voltage in a certain experiment is 1.5 V. What is the maximum kinetic energy of photoelectrons emitted?


Light of intensity 10−5 W m−2 falls on a sodium photo-cell of surface area 2 cm2. Assuming that the top 5 layers of sodium absorb the incident energy, estimate time required for photoelectric emission in the wave-picture of radiation. The work function for the metal is given to be about 2 eV. What is the implication of your answer?


Draw graphs showing variation of photoelectric current with applied voltage for two incident radiations of equal frequency and different intensities. Mark the graph for the radiation of higher intensity.


Can a photon be deflected by an electric field? Or by a magnetic field?


A hot body is placed in a closed room maintained at a lower temperature. Is the number of photons in the room increasing?


Light of wavelength λ falls on a metal with work-function hc/λ0. Photoelectric effect will take place only if


A parallel beam of monochromatic light of wavelength 663 nm is incident on a totally reflecting plane mirror. The angle of incidence is 60° and the number of photons striking the mirror per second is 1.0 × 1019. Calculate the force exerted by the light beam on the mirror.

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


A beam of white light is incident normally on a plane surface absorbing 70% of the light and reflecting the rest. If the incident beam carries 10 W of power, find the force exerted by it on the surface.

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


The electric field associated with a monochromatic beam is 1.2 × 1015 times per second. Find the maximum kinetic energy of the photoelectrons when this light falls on a metal surface whose work function is 2.0 eV.

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


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×