CTET 2 Math and Science Feb 2016 Paper

An electric circuit is set up in such a way that the positive terminal of a battery V is connected to a bulb ${\mathit{B}}_1$ which is connected to a resistor R which is connected to bulb ${\mathit{B}}_2$. ${\mathit{B}}_2$ is finally connected to the negative terminal of the battery. Both the bulbs are glowing. If the value of R is increased, then