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The energy equivalent of 2.0 mg mass def...

The energy equivalent of 2.0 mg mass defect is

A

`1.8 xx 10^4` erg

B

`9xx 10^(-19)` erg

C

`1.5 xx 10^20` erg

D

`1.8 xx 10^18` erg

Text Solution

Verified by Experts

The correct Answer is:
D
`E=mc^2`
`c=3xx10^10` cm/s, m=2mg = `2xx10^(-3) g`
`E=2xx10^(-3) (3xx10^10)^2`
`=2xx10^(-3) xx 9xx 10^20`
`E=1.8xx10^18` erg
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