Home
Class 12
PHYSICS
According to Einstein's photoelectric eq...

According to Einstein's photoelectric equation graph of kinetic energy of emitted photo electrons from metal versus frequency of incident radiation is linear .Its slope……

A

depends on type of metal used

B

depends on intensity of radiation

C

depends on both metal used and intensity of radiation

D

is same for all metals and free from intensity of radiation.

Text Solution

Verified by Experts

The correct Answer is:
D

Comparing `(1)/(2)mv_(max)^(2)=hf_phi` qith y=mx+c so graph of `(1)/(2)mv_(max)^(2)tof` is linear and its slope =h (planck constant )which is same for all metals and free from intensity of radiation,so option (D) is correct.
Promotional Banner

Topper's Solved these Questions

  • DUAL NATURE OF RADIATION AND MATTER

    KUMAR PRAKASHAN|Exercise Section-D (MCQs asked in CBSE-PMT,AIPMT,NEET)|1 Videos
  • DUAL NATURE OF RADIATION AND MATTER

    KUMAR PRAKASHAN|Exercise Section-D (MCQs asked in AIIMS)|55 Videos
  • DUAL NATURE OF RADIATION AND MATTER

    KUMAR PRAKASHAN|Exercise Section-D (MCQ based on Textual Illustrations and Exercise)|1 Videos
  • CURRENT ELECTRICITY

    KUMAR PRAKASHAN|Exercise SECTION [D] MULTIPLE CHOICE QUESTIONS (MCQs) (MCQs ASKED IN BOARD EXAM AND GUJCET)|23 Videos
  • ELECTRIC CHARGES AND FIELDS

    KUMAR PRAKASHAN|Exercise SECTION D MCQS ASKED IN COMPETITIVE EXAMES (MCQS AKSED IN BOARD EXAM AND GUJCET)|14 Videos

Similar Questions

Explore conceptually related problems

For the photoelectric effect, the maximum kinetic energy E_(k) of the emitted photoelectrons is plotted against the frequency of the incident photons as shown in the figure. The slope of the curve gives

According to Einstein's equation of photo-electric effect which of the following graph shows realtion between kinetic energy of electron emitted and frequency of incident radiation?

For a photoelectric experiment graph between kinetic energy of fastest electron and frequency of light is plotted find threshold wavelength of metal.

In the shown expermiental setup to study photoelectric effect, two conducting electrodes are enclosed in an evacuated glass-tube as shown. A parallel beam of monochromatic light, falls on photosensitive electrodes. The emf of battery shwon is high enough such that all photoelectron ejected from left electrode will reach the right electrode. Under initial conditions photoelectrons are emitted. AS changes are made in each situation of column-I, Match the statements in column-I with results in column-II. {:(,"Column I",,"Column II"),((A),"If frequency of incident light is increased keeping its intensity constant",(p),"magnitude of stopping potential"),((B),"If frequency of incident light is increased and its intensity is decreased",(q),"current through circuit may stop"),((C),"If work function of photo sensitive electrode is increased",(r),"maximum kinetic energy of ejected photoelectrons will increase"),((D),"If intensity of incident light is increased keeping its frequency constant",(s),"saturation current will increase"):}

Work function of aluminium plate is phi when radiation of hf energy is incident on metal surface photoelectron of kinetic energy K is emitted .Now if frequency of radiation is made double,kinetic energy of photoelectron will become…..

Given in fig. is the graph between frequency v of the incident light and maximum kinetic energy (E_(k)) of the emitted photoelectrons. Find the values of (i) threshold frequency and (ii) work function form the graph.

For given metal plate threshold frequency is V_(0) . When radiation of 2V_(0) is incident on metal surface ,maximum velocity of photoelectron emitted is V_(1) when frequency of incident radiation is charged to 5V_(0) ,maximum velocity of photoelectron emitted is v_(2) .Ration of v_(1) and v_(2) is .....

In an experiment on photoelectric effect, the slope of the cut-off voltage versus frequency of incident light is found to be 4.12xx 10^(-15) v s . Calculate the value of Planck’s constant.

Statement-1 : In a photoelectric effect experiment different photoelectron have different kinetic energy. and Statement-2 : In the incident radiation different photons must have different energy.

Assertion : Though light of a single frequency (monochromatic) is incident on a metal , the energies of emitted photoelectrons are different. Reason : The energy of electrons emitted from inside the metal surface is lost in collision with the other atoms in the metal.

KUMAR PRAKASHAN-DUAL NATURE OF RADIATION AND MATTER-Section-D (MCQs asked in competitve exams)
  1. When frequencies f(1) and f(2) are incident on two indentical photo se...

    Text Solution

    |

  2. Radiation of energy E is incident on complete reflecting surface.Momen...

    Text Solution

    |

  3. According to Einstein's photoelectric equation graph of kinetic energy...

    Text Solution

    |

  4. A photocell is placed at 1 m distance from light source when distance ...

    Text Solution

    |

  5. If speed of electron emitted becomes double change in wavelength will ...

    Text Solution

    |

  6. Keeping voltage on anode of photocell,wavelength of light is changed p...

    Text Solution

    |

  7. Energy corresponding to threshold frequency of metal is 6.2 eV.For giv...

    Text Solution

    |

  8. When metal surface is incident with photon after how much time photoel...

    Text Solution

    |

  9. Momentum of photon with frequency f will be …..(where c is velocity o...

    Text Solution

    |

  10. In experiment of photoelectric effect width of slit is equal to de-Bro...

    Text Solution

    |

  11. When radiation of 400 nm wavelength Is incident on photocell ,emitter ...

    Text Solution

    |

  12. From source of power 4 kW,radiation emitted are such that photon are e...

    Text Solution

    |

  13. A nucleus of mass M is initially at rest.It absorb neutron having m(N)...

    Text Solution

    |

  14. The radiation corresponding to 3 to 2 transition of hydrogen atom fall...

    Text Solution

    |

  15. Radiation of wavelength lambda is incident on a photocell.The fastest ...

    Text Solution

    |

  16. A metal plate of area 1xx10^(-4)m^(2) is illuminated by a radiation 16...

    Text Solution

    |

  17. A beam of electromagnetic radiation intensity 6.4xx10^(-5)W//cm^(2) is...

    Text Solution

    |

  18. An electron (of mass m) and a photon have the same energy E in the ran...

    Text Solution

    |

  19. Two photons of energy 4 eV and 4.5 eV are incident on two metals A and...

    Text Solution

    |

  20. When electron with mass m is accelerated with volt V associated de-Bro...

    Text Solution

    |