What is the ‘power’ of plane glass plate ?

Explanation

To determine the power of a plane glass plate, we can follow these steps:

### Step 1: Understand the Concept of Power
The power (P) of a lens is defined as the reciprocal of its focal length (F). The formula is given by:
\[ P = \frac{1}{F} \]
where:
- \( P \) is the power of the lens,
- \( F \) is the focal length of the lens.
...