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Define black body and black body radiati...

Define black body and black body radiations.

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Knowledge Check

  • A black body emits

    A
    radiations of all wave lenghts
    B
    no radiation
    C
    radiation of single wave length
    D
    radiation of selected wave length

  • The black body have

    A
    good absorption of heat capacity
    B
    better absorption of heat capacity
    C
    best absorption of heat capacity
    D
    no absorption of heat capacity

  • In Ferris perfectly black body, the black body is

    A
    aperture
    B
    outer sphere
    C
    inner sphere
    D
    conical projection
    • CBSE COMPLEMENTARY MATERIAL-STRUCTURE OF ATOM-2-MARK QUESTIONS
    1. Define black body and black body radiations.

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    2. What transition in the hydrogen spectrum would have the same wavelen...

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    3. What transition of Li^(+2) spectrum will have same wavelength as that ...

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    4. Calcultte the enrgy required for the process , He^+ (g) rarr He^(2+...

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    5. Calculate the wave number for the longest wavelength transition in th...

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    6. To which orbit the electron in H atom will jump on absorbing 12.1 eV...

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    7. Calculate the energy associated with the first orbit of He^+. What is ...

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    8. What is the distance of separation between 3rd and 4th orbit of H-at...

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    9. The energy of the electron in the ground state of H-atom is -13.6 eV. ...

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    10. Calculate the number of protons emitted in 10 hours by a 60 W sodium ...

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    11. Which has a higher energy, a photon of violet light with wavelength 40...

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    12. A 100 watt bulb emits monochromatic light of wavelength 400 nm. Calcul...

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    13. What are the maximum number of emission lines when the excited elect...

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    14. Which has more energy, light radiation of wavelength 400 pm or light ...

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    15. Find the energy of electron in 4th shell of Li^(2+) ion.

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    16. What is the wave number of an electron with shortest wavelength radi...

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    17. Write short note on : Continuous and discontinuous spectrum.

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    18. Write short note on : Absorbtion and emission spectrum.

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    19. Calculate the mass of a photon with wavelength 3.6Å.

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    20. Calculate the mass of the photon with wavelength of 5 pm.

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