1.

The energy equivalent to a substance of mass 1 g is

Answer»

`18xx10^(13)J`
`9xx10^(13)J`
`18xx10^(6)J`
`9xx10^(6)J`

Solution :`E=mc^(2)=1XX10^(-3)xx(3xx10^(8))^(2)=9xx10^(13)J`


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