Assertion : If three identical bulbs are connected in series as shown in figure then on closing the switchs. Bulb `C` short circuited and hence illumination of bulbs `A` and `B` decreases.
Reason : Voltage on `A` and `B` decreases

Options

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true but reason is not the correct explanation of the assertion
C. If assertion is true but reason is false
D. If the assertion and reason both are false.

Answer

D

Explanation

When switch S is closed, bulb C is short circuited, so voltage V distributes only in two parts i.e. voltage on bulb A and B increases as compared previously. Hence illumination of bulb A and B increases.