The resultant capacitance between A and B in the following figure is equal to

1 \(\mu F\)
3 \(\mu F\)
2 \(\mu F\)
1.5 \(\mu F\)
The correct answer is (a): 1 µF
The rearrangement of the circuit is shown below.
The capacitors shown in the rectangular dotted line are in series and the capacitors shown in the circular dotted line are in parallel.


Find work done in bringing charge q = 3nC from infinity to point A as shown in the figure : 
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Time period of a simple pendulum is longer at the top of a mountain than that at the base of the mountain.
Reason (R): Time period of a simple pendulum decreases with increasing value of acceleration due to gravity and vice-versa. In the light of the above statements, choose the most appropriate answer from the options given below: