Home
Class 11
CHEMISTRY
If change in energy (DeltaE)=3xx10^(-8) ...

If change in energy `(DeltaE)=3xx10^(-8)` J, `h=6.64xx10^(-34)` J-s and `c=3xx10^8`m/s, then wavelength of the light is

A

`6.36xx10^3` Å

B

`6.36xx10^5` Å

C

`6.64xx10^(-8)` Å

D

`6.36xx10^(18)` Å

Text Solution

Verified by Experts

The correct Answer is:
C
`DeltaE="hc"/lambda "or " lambda="hc"/(DeltaE)`
`=(6.64xx10^(-34) xx 3xx10^8)/(3xx10^(-8))=6.64xx10^(-8) Å`
Promotional Banner

Topper's Solved these Questions

  • ATOMIC STRUCTURE

    ERRORLESS |Exercise Dual nature of electron|28 Videos

  • ATOMIC STRUCTURE

    ERRORLESS |Exercise Uncertainty principle and Schrodinger wave equation|22 Videos

  • ATOMIC STRUCTURE

    ERRORLESS |Exercise Atomic number, Mass number, Atomic species|56 Videos

  • SURFACE CHEMISTRY

    ERRORLESS |Exercise JEE Section (Matching Column)|2 Videos

Similar Questions

Explore conceptually related problems

What is the wavelength of light . Given energy =3.03xx10^(-19)J, h=6.6xx10^(-34)JS, c=3.0xx10^(8)m//s ?

(a) construct an expression for a quantity having the dimension of length starting from velocity of light c, the mass of an electron m and Planck's constant h. (b) Evaluate the value of this length taking constant of proportionality to be unity, m=9.1xx10^(-31) kg, c=3xx10^(8) m//s and h=6.63xx10^(-34) J-s . [This wavelength is called Compton wavelength and plays an important role in atomic physics.]

The number of photons falling per second on a completely darkened plate to produce a force of 6.62xx10^-5N is 'n'. If the wavelength of the light falling is 5xx10^-7 m, then n= __________ xx10^22. (h=6.62 xx10^-34 J-s )

A monochromatic source of light operating at 500W emits 6xx10^(20) photon per second. Find the wavelength of the light used. Use h=6.6xx10^(-34)Js , C=3xx10^8m//s

Calculate the de-Broglie wavelength of an electron moving with one fifth of the speed of light. Neglect relativistic effects. (h=6.63 xx 10^(-34) J.s., c=3xx10^(8)m//s , mass of electron =9xx10^(-31)kg)

For given enegy, corresponding wavelength will be E = 3.03 xx 10^(-19) Joules (h = 6.6 xx 10^(-34) j X sec., C = 3 xx 10^(8) m/sec

The energy of a photon of wavelength 4000 Å is (use h=6.66xx10^(-34) J-s)

Energy of an quanta of frequency 10^(15) Hz and h = 6.6 xx 10^(-34) J - sec will be

The value of planok,s constant is 6.63xx10^(-34)Js 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) ?

ERRORLESS -ATOMIC STRUCTURE-Atomic models and Plancks quantum theory
  1. Electron occupies the available orbital singly before pairing in any o...

    Text Solution

    |

  2. Who modified Bohr's theory of introducing elliptical orbits for electr...

    Text Solution

    |

  3. If change in energy (DeltaE)=3xx10^(-8) J, h=6.64xx10^(-34) J-s and c=...

    Text Solution

    |

  4. The frequency of radiaiton emitted when the electron falls form n =4 t...

    Text Solution

    |

  5. The energy of second Bohr orbit of the hydrogen atom is - 328 k J mol^...

    Text Solution

    |

  6. The energy absorbed by each molecule (A2) of a substance is 4.4 xx 10^...

    Text Solution

    |

  7. The total number of atomic orbitals in fourth energy level of an atom ...

    Text Solution

    |

  8. The energies E1 and E2 of two radiations are 25 eV and 50 e V respecti...

    Text Solution

    |

  9. What is the value of electron gain enthalpy of Na^+ if IE1 of Na = ...

    Text Solution

    |

  10. According to Bohr theory, which of the following transition in hydroge...

    Text Solution

    |

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

    Text Solution

    |

  12. The spectrum of He is expected to be similar to that of

    Text Solution

    |

  13. Which one of the following is not the characteristic of Planck's quant...

    Text Solution

    |

  14. The energy equivalent of 2.0 mg mass defect is

    Text Solution

    |

  15. Wave length associated with electron motion

    Text Solution

    |

  16. Ratio of radii of second and first Bohr orbits of H atom

    Text Solution

    |

  17. According to the bohr's atomic model, the relation between principal q...

    Text Solution

    |

  18. When beryllium is bombarded with alpha-"particles", extremely penetrat...

    Text Solution

    |

  19. When an electron drops from a higher energy level to a low energy leve...

    Text Solution

    |

  20. if electron falls from n=3 to n=2, then emitted energy is

    Text Solution

    |