Home
Class 11
CHEMISTRY
The value of Planck's constant is 6.63xx...

The value of Planck's constant is `6.63xx10^(-34)J*s`. The speed of light is `3xx10^(17)nm*s^(-1)`. Which value is closest to the wavelength in nanometer of a quantum of light with frequency of `6xx10^(15)s^(-1)`-

A

50

B

75

C

10

D

25

Text Solution

Verified by Experts

The correct Answer is:
A
Wavelength of light, `lamda=(c)/(lamda)=(3xx10^(17))/(6xx10^(15))=50` nm
Promotional Banner

Topper's Solved these Questions

  • STRUCTURE OF ATOM

    CHHAYA PUBLICATION|Exercise MCQ HOTSPOT (SINGLE CORRECT TYPE)|68 Videos

  • STRUCTURE OF ATOM

    CHHAYA PUBLICATION|Exercise EXERCISE (VERY SHORT TYPE QUESTION)|33 Videos

  • STRUCTURE OF ATOM

    CHHAYA PUBLICATION|Exercise HIGHER ORDER THINKING SKILL (HOTS) QUESTIONS|19 Videos

  • STATES OF MATTER : GASES AND LIQUIDS

    CHHAYA PUBLICATION|Exercise PRACTICE SET|10 Videos

Similar Questions

Explore conceptually related problems

The value of Planck's constant is 6.63xx10^-34 Js. The speed of light is 3xx10^17nms^-1 . which value is closest to the wavelength in nanometer of a quantum of light with frequency of 6xx10^15s^-1 ?

If the speed of light is 3.0xx10^(8)m*s^(-1) , calculate the distance covered by light in 2.00 ns.

H, He^(+), Li^(2+) are examples of atoms or ions with one electron each . The energy of such atoms when in the n-th energy state (according to Bohr,s theory , n=1,2,3…. =principal quantum number ) is E_n =(-13.6 Z^2)/(n^2) eV (1 eV =1.6xx10^(-19)J) . For the ground state ,n=1 . in order to raise the atom from the ground state to n=f , the suitable incident light should have a wavelength given by lambda=(hc)/(E_f-E_1) . But the atom cannot stay permanently in the f-energy state, ultimately , it comes to the ground state by radiating the extra energy , E_f-E_1 as electromagnetic radiation . The electron of the atom comes from n=f to n=1 in one or more steps using the permitted energy levels . As a result there is a possibility of emission of radiation with more than one wavelength from the atom. Planck's constant =6.63 xx10^(-34)J*s and velocity of light c=3xx10^(8)m*s^(-1) . (i)What is the wavelength of the light incident on the atom to raise it to the fourth quantum level from ground state ?

Calculate the wavelength, frequency and wave-number of a light wave whose period is 2.0xx10^(-10)s .

Refractive index of a medium in which velocity of light is 2 xx 10^(8) m * s^(-1) , is

Threshold frequency of a metal is 5xx10^(13)s^(-1) upon which 1xx10^(14)s^(-1) frequency light is focused. Then the maximum kinetic energy of emitted electron is-

Wavelength of ultraviolet light is 3 xx 10^(-5) cm . What will be the energy of a photon of this light, in eV? (c = 3 xx 10^(10) m.s^(-1))

What is the mass of a photon of sodium light with a wavelength of 5890 Å? [h = 6.626 xx 10^(-34) Js]

Calculate the energy in joule corresponding to light of wavelength 45 nm. (plancks constant, h=6.63xx10^(-34)J*s , speed of light c=3xx10^(8)m*s^(- ))-

Calculate the energy in joule correspending to light of wavelength 45nm. (Planck's constant h= 6.63xx10^-34 Js, speed of light c= 3xx10^8m/s ).

CHHAYA PUBLICATION-STRUCTURE OF ATOM-ENTRANCE QUESTION BANK
  1. The correct set of four quantum numbers for the valence electron of ru...

    Text Solution

    |

  2. What is the maximum number of electrons that can be associated with th...

    Text Solution

    |

  3. The value of Planck's constant is 6.63xx10^(-34)J*s. The speed of ligh...

    Text Solution

    |

  4. Based on equation E=-2.178xx10^(-18)((z^(2))/(n^(2)))J, certain conclu...

    Text Solution

    |

  5. What is the maximum number of electrons that can be associated with th...

    Text Solution

    |

  6. Calculate the energy in joule corresponding to light of wavelength 45 ...

    Text Solution

    |

  7. What is the maximum number of orbitals that can be identified with the...

    Text Solution

    |

  8. Which is the correct order of increasing energy of the listed orbitals...

    Text Solution

    |

  9. Gadolinium belongs to 4f-series. Its atomic number is 64. which of the...

    Text Solution

    |

  10. Which of the following pairs of d-orbitals witll have electron density...

    Text Solution

    |

  11. How many electrons can fit in the orbital for which n=3 and l=1-

    Text Solution

    |

  12. Two electrons occupying the sme orbital are distinguished by-

    Text Solution

    |

  13. Which one is a wrong statement?

    Text Solution

    |

  14. Which one is a wrong statement-

    Text Solution

    |

  15. Which of the following is wrong for Bohr model-

    Text Solution

    |

  16. Smallest wavelength occurs for--

    Text Solution

    |

  17. In bohr's orbit, (nH)/(2pi) indicates-

    Text Solution

    |

  18. Threshold frequency of a metal is 5xx10^(13)s^(-1) upon which 1xx10^(1...

    Text Solution

    |

  19. A particle is moving 3 times faster than the speed of electron. If the...

    Text Solution

    |

  20. Which of the following pairs presents isotones-

    Text Solution

    |