A bent rod `PQR (PQ = QR =l)` shown here is rotating about its end P with angular speed `omega` in a region of transverse magnetic field of strength B.
Options:
(a) e.m.f. induced across the rod is `Bomegal^2`
(b) e.m.f. induced across the rod is `Bomegal^2'/'2`
(c) Potential difference between points `Q and R` on the rod is `Bomegal^2'/'2`
(d) Potential difference between points `Q and R` on the rod is zero