A conducting loop of radius \(\frac{10}{\sqrt{\pi }}\mathrm{cm}\) is placed perpendicular to a uniform magnetic field of…

A conducting loop of radius \(\frac{10}{\sqrt{\pi }}\mathrm{cm}\) is placed perpendicular to a uniform magnetic field of \(0.5T\). The magnetic field is decreased to zero in \(0.5\mathrm{s}\) at a steady rate. The induced \(\mathrm{emf}\) in the circular loop at \(0.25s\) is:

[JEE mains 2023]