If a mark of size 0.2 cm on the surface of a glass sphere of diameter 10 cm and `mu = 1.5 `is viewed through the diametrically opposite point, where will the image be seen and of what size? (in mm)

Explanation

To solve the problem, we need to find the position and size of the image formed by a mark on the surface of a glass sphere when viewed from the diametrically opposite point. Here’s the step-by-step solution:

### Step 1: Identify Given Data
- Diameter of the glass sphere, \(D = 10 \, \text{cm}\)
- Radius of the glass sphere, \(R = \frac{D}{2} = 5 \, \text{cm}\)
- Refractive index of glass, \(\mu = 1.5\)
- Size of the mark (object size), \(O = 0.2 \, \text{cm}\)
- Object distance, \(u = -D = -10 \, \text{cm}\) (negative as per sign convention)
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