[UPSC IFoS 2014] Semiconductors/Solar cell (Q214, 8M)

A silicon diode operates at a forward bias voltage of $0\cdot 4\text{ V}$ . Calculate the factor by which the current will be multiplied when the temperature is increased from $25^\circ\text{C}$ to $150^\circ\text{C}$ ( $\eta$ for $\text{Si} = 2$ ).