Thank you for reporting, we will resolve it shortly
Q.
From the following diode circuit, which diode is in forward biased condition
AIPMTAIPMT 2000Semiconductor Electronics: Materials Devices and Simple Circuits
Solution:
A diode is said to be forward biased if $p$-type semiconductor of $p-n$ junction is at positive potential with respect to $n$-type semiconductor of $p-n$ junction. It is so for circuit (a).