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The energy of the electromagetic wave is...

The energy of the electromagetic wave is of the order of `15` keV. To which part of the spectrum dose it belong?

A

`gamma`-rays

B

x-rays

C

Infrared rays

D

Ultra-violet rays

Text Solution

Verified by Experts

The correct Answer is:
b
`E=15KeV =15000eV=15000xx1.6xx10^(-19)J`
Wavelength `lambda=(hc)/E=(6.64xx10^(-34)xx3xx10^8)/(1500xx1.6xx10^(-19)J)`
`=0.083xx10^-9m~~10^-1nm`
Since,` lambda` for x-rays is in between 1nm to `10^-3nm`,
so the given radiation is x-rays.
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