The time period \( T \) of a simple pendulum is given by the formula: \[ T = 2\pi \sqrt{\frac{L}{g}}, \] where \( L \) is the length of the pendulum and \( g \) is the acceleration due to gravity.
Therefore, the correct answer is option (1).
Method used for separation of mixture of products (B and C) obtained in the following reaction is: 