1.

Dimensional formula for Joule's mechanical equivalent is

Answer»

`[M^(-1)L^(-3)T^(4)A^(2)]`
`[M^(0)L^(0)T^(0)A^(0)]`
`[M^(-1)LTA^(-1)]`
`[M^(-1)L^(-1)T^(4)]`

ANSWER :B


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