P-N Junction Diode question from JEE Main 2015 (11 Apr, Shift 1)

Answer: (b)

1. An ideal diode conducts only when its p-side (anode) is at higher potential.
2. Positive terminal at A: $D_1$ is forward biased and $D_2$ is reverse biased, so only the $5\ \Omega$ branch conducts: $I = \frac{2}{5} = 0.4$ A.
3. Positive terminal at B: $D_2$ conducts and $D_1$ is blocked, so only the $10\ \Omega$ branch conducts: $I = \frac{2}{10} = 0.2$ A.
4. So the answer is (b) 0.4 A and 0.2 A.