A square loop of side 50 cm is placed in a uniform magnetic field of 3‧0 T acting perpendicular to the plane of the loop. If the loop is rotated…

A square loop of side $\displaystyle 50$ cm is placed in a uniform magnetic field of $\displaystyle 3$‧$\displaystyle 0$ T acting perpendicular to the plane of the loop. If the loop is rotated through an angle of $\displaystyle 90$° in $\displaystyle 0.3$ s, the value of emf induced in the loop would be :