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Light emitted by Krypton 86 is 6057.8021...

Light emitted by Krypton 86 is 6057.8021 Å. Calculate number of wavelengths of Krypton 86 in one metre. What is the order of magnitude ?

Text Solution

Verified by Experts

Here, `lambda= 6057.8021 Å`
`=6.0578021xx10^(-7)m`
`1m = (1)/(6.0578021xx10^(-7))` wavelengths
= `1650, 763.3` wavelengths
`1m =1.6507633xx10^6`
As `1.65 lt 5`, therefore, order of magnitude = 6.
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Knowledge Check

  • How many wavelengths of Kr_(86) are there in one metre?

    A
    2348123.73
    B
    652189.63
    C
    1553164.13
    D
    1650763.73

  • How many wavelength of Kr^(86) are there is one metre

    A
    155316.13
    B
    1650763.73
    C
    652189.63
    D
    2348123.73

  • In the interference pattern obtained in a biprism experiment, 5th order bright fringe is obtained at a point on the screen, when monochromatic light of wavelength 6000 Å is used. What is the order of the bright fringe produced at the samme point, if the light of wavelength 5000 Å is used?

    A
    `n=3`
    B
    `n=4`
    C
    `n=6`
    D
    `n=10`

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