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  • Try this! The energy of the em waves is of the order of 15 ke V. To which part of the spectrum does it belong ?

The energy of the em waves is of the order of 15 ke V. To which part of the spectrum does it belong ?

  • Option 1)

    Infra - red rays

  • Option 2)

    Ultraviolet rays

  • Option 3)

    \gamma - rays

  • Option 4)

    X - rays

 

Answers (1)

As we learnt in

X Rays -

Frequency Range 3 imes 10^{17} Hz to 3 imes 10^{19} Hz

- wherein

Wavelength Range 0.1 A^{o} to 100 A^{o}

 

 

 

The wavelength corresponding to 15KeV

\lambda =\frac{12400}{15KeV}\AA=\frac{12.40}{15}\AA=0.83\AA

This belong to X ray region of EM wave. 


Option 1)

Infra - red rays

Incorrect

Option 2)

Ultraviolet rays

Incorrect

Option 3)

\gamma - rays

Incorrect

Option 4)

X - rays

Correct

Posted by

Vakul

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