Hi Rohit

Power is work done per unit time.

i.e Power= Work/Time

Then ,Dimensional Formula of power =Dimensional Formula of Work/ Dimensional Formula of time

Now , Dimensional Formula of Work = M ¹ L ² T ^-2 Dimensional Formula of Time = T ¹

So Dimensional Formula of Power

= ( M ¹ L ² T ^-2 ) / T

= M ¹ L ² T ^-3

Thus , Dimensional Formula of Power is

M ¹ L ² T <sup>-3

I hope that it helps you</sup>

Thankyou