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If the wavelength of an electromagnetic ...

If the wavelength of an electromagnetic radiation is 2000 A. what is its energy in ergs?

A

`9,94xx10^(-12)`

B

`9,94xx10^(-19)`

C

`4.97xx10^(-12)`

D

`4.97xx10^(-19)`

Text Solution

Verified by Experts

The correct Answer is:
a
wavelength ,`lambda=2000A` (Given)
`therefore` Energy,`E=hv=(hc)/lambda`
`(6.62xx10(-27)xx3xx10^(10))/(2000xx10^(8))`
`9.94xx10^(-12)erg`
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