If the bob of a simple pendulum is made to osciliate in some fluid of density greater than the density of air ( density of the bob > density of the fluid ), then time period of the pendulum increased or decrease.

Explanation

To determine whether the time period of a simple pendulum increases or decreases when the bob is submerged in a fluid with a density greater than that of air, we can analyze the situation step by step.

### Step-by-Step Solution:

1. **Understand the Pendulum in Air:**
- The time period \( T \) of a simple pendulum in air is given by the formula:
\[
T = 2\pi \sqrt{\frac{L}{g}}
...