Home
Class 12
PHYSICS
Two separate monochromatic light beams A...

Two separate monochromatic light beams A and B of the same intensity (energy per unit ara per unit time) are falling normally on a unit area of a metallic respectively.Their wavelength are `lambda_(A)` and `lambda_(B)` respectively. Assuming that all the incident light is used in ejecting the photoelectrons form beam A and that from B is

A

`(A)/(B)`

B

`(D)/(A)`

C

`(A)/(B)`

D

`(B)/(A)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ATOMIC PHYSICS

    RESONANCE ENGLISH|Exercise Exercise (2) Only one option correct type|30 Videos

  • ATOMIC PHYSICS

    RESONANCE ENGLISH|Exercise Exercise-2 part-II Single and double value integer type|12 Videos

  • ATOMIC PHYSICS

    RESONANCE ENGLISH|Exercise Exercise 1 Part-1 subjective questions|35 Videos

  • ALTERNATING CURRENT

    RESONANCE ENGLISH|Exercise HIGH LEVEL PROBLEMS|11 Videos

  • CAPACITANCE

    RESONANCE ENGLISH|Exercise High Level Problems|16 Videos

Similar Questions

Explore conceptually related problems

Two separate monochromatic light beams A and B of the same intensity (energy per unit area per unit time) are falling normally on a unit area of a metallic surface. Their wavelength are lambda_(A) and lambda_(B) respectively. Assuming that all the the incident light is used in ejecting the photoelectrons, the ratio of the number of photoelectrons from beam A to that from B is

If K_(1) and K_(2) are maximum kinetic energies of photoelectrons emitted when light of wavelength lambda_(1) and lambda_(2) respectively are incident on a metallic surface. If lambda_(1)=3lambda_(2) then

If K_(1) and K_(2) are maximum kinetic energies of photoelectrons emitted when light of wavelength lambda_(1) and lambda_(2) respectively are incident on a metallic surface. If lambda_(1)=3lambda_(2) then

Two metal spheres have radii rand 2r and they emit thermal radiation with maximum intensities at wavelengths lambda and 2lambda . respectively. The respective ratio of the radiant energy emitted by them per second will be

Three light sources A,B, and C emit equal amount of radiant energy per unit time. The wavelength emitted by the three sources are 450 nm, 555 nm and 700 nm respectively. The brightness sensed by an eye for the sources are X_A, X_B and X_c respectively. Then

The maximum KE of photoelectrons emitted from a cetain metallic surface is 30 eV when monochromatic radiation of wavelength lamda falls on it. When the same surface is illuminated with light of wavelength 2lamda , the minimum KE of photoelectrons is found to be 10 eV. (a) Calculate the wavelength lamda and (b) determine the maximum wavelength of incident radiation for which photoelectric emission is possible.

A beam of monochromatic light of wavelength lambda falls normally on a diffraction grating of line spacing d. If theta is the angle between the second-order diffracted beam and the direction of the incident light, what is the value of sin theta ?

A beam of monochromatic light of wavelength lambda falls normally on a diffraction grating of line spacing d. If theta is the angle between the second-order diffracted beam and the direction of the incident light, what is the value of sin theta ?

Two metallic plates A and B , each of area 5 xx 10m are placed parallel to each other at a separation of 1 cm . Plate B carries a positive charge of 33.7 pc . A monochromatic beam of light, with photons of energy 5 eV each, starts falling on plate A at t = 0, so that 10 photons fall on it per square meter per second. Assume that one photoelectron is emitted for every 10 incident photons. Also assume that all the emitted photoelectrons are collected by plate B and the work function of plate A remains constant at the value 2 eV . Electric field between the plates at the end of 10 seconds is

Two spherical stars A and B emit black body radiation. The radius of A is 400 times that of B and A emits 10^(4) times the power emitted from B. The ratio (lambda_(A)//lambda_(B)) of their wavelengths lambda_(A) and lambda_(B) at which the peaks oc cur in their respective radiation curves is :

RESONANCE ENGLISH-ATOMIC PHYSICS-Exercise ( Part II : Only one one correct type)
  1. In a photoelectric experiment, if stopping potential is applied, then ...

    Text Solution

    |

  2. If the frequency of light in a photoelectric experiment is doubled, th...

    Text Solution

    |

  3. Two separate monochromatic light beams A and B of the same intensity (...

    Text Solution

    |

  4. Which one of the following graphs in figure shows the variation of pho...

    Text Solution

    |

  5. When a metalic surface is illuminated with light of wavelength lambda,...

    Text Solution

    |

  6. The anode plate in an experiment on photoelectric effect is kept verti...

    Text Solution

    |

  7. The maximum kinetic energy of photoelectrons emitted from a surface wh...

    Text Solution

    |

  8. A photon of light enters a block of glass after travelling through vac...

    Text Solution

    |

  9. We may state that the energy E of a photon of frequency nu is E =hnu, ...

    Text Solution

    |

  10. The de- Broglie wavelength of an electron moving with a velocity 1.5xx...

    Text Solution

    |

  11. A partical of mass M at rest decays into two Particles of masses m1 ...

    Text Solution

    |

  12. Let p and E denote the linear momentum and the energy of photon. For a...

    Text Solution

    |

  13. The de-Broglie wavelength of a neutron corresponding to root mean squa...

    Text Solution

    |

  14. The wavelength lambda of de Broglie waves associated with an electron ...

    Text Solution

    |

  15. The orbital speed of the electron in the ground state of hydrogen is v...

    Text Solution

    |

  16. The total energy of an electron in the first excited state of hydrogen...

    Text Solution

    |

  17. In above Q., the potential energy of the electron is:

    Text Solution

    |

  18. If a(0) is the Bohr radius, the radius of then n=2 electronic orbit in...

    Text Solution

    |

  19. Ionisation energy of a hydrogen-like ion A is greater than that of ano...

    Text Solution

    |

  20. Which energy state of doubly ionized lithium Li^(++) has the same ener...

    Text Solution

    |