How is the barometric height of a simple barometer affected if Its tube is pushed down into the trough of mercury?

Explanation

To determine how the barometric height of a simple barometer is affected when its tube is pushed down into the trough of mercury, we can analyze the situation step by step.

### Step-by-Step Solution:

1. **Understanding the Barometer**: A simple barometer consists of a glass tube filled with mercury, inverted in a trough of mercury. The height of the mercury column in the tube indicates atmospheric pressure.

2. **Initial Condition**: Initially, the barometric height is determined by the balance between atmospheric pressure and the weight of the mercury column in the tube.

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