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What is the ratio of 1 KWh (kilowatt hou...

What is the ratio of 1 KWh (kilowatt hour) to 1 MeV (million electron volt)?

A

`2.25xx10^(19)`

B

`2.25xx10^(17)`

C

`2.25xx10^(23)`

D

`2.25xx10^(12)`

Text Solution

Verified by Experts

The correct Answer is:
a
Both of them are the units of electric energy.
`1kWh=1000Wxx1h=1000(J)/(s)xx3600s`
`=36xx10^(5)=3.6xx10^(6)J`
and 1 eV = `1.6xx10^(-19)J`
`therefore 1MeV=1.6xx10^(-19)xx10^(6)J=1.6xx10^(-13)J`
`therefore (1kWh)/(1MeV)=(3.6xx10^(6)J)/(1.6xx10^(-13)J)=2.25xx10^(19)`
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