The pulling sensation when we stand near a running train can be explained on the basis of:

Options

A. Archimedes Principle
B. Bernoulli's law
C. Avogadro's Hypothesis
D. Newton's third Law of motion

Explanation

To explain the pulling sensation when we stand near a running train, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Scenario**: When a train is running, it moves at a high speed, creating a noticeable effect on the air around it.

2. **Pressure Differences**: According to Bernoulli's principle, as the speed of the train increases, the pressure around it decreases. This is because faster-moving air has lower pressure compared to slower-moving air.

3. **Air Movement**: As the train moves, it pushes air in front of it, creating a low-pressure area behind it. The surrounding air, which is at a higher pressure, rushes in to fill this low-pressure area.

4. **Feeling the Pull**: When we stand near the moving train, we experience a sensation of being pulled towards it. This is because the higher pressure air from the surroundings is moving towards the lower pressure area created by the moving train.

5. **Conclusion**: The pulling sensation can be explained by Bernoulli's law, which states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure. Thus, the correct answer to the question is Bernoulli's law.