There is a glass sphere of radius 20 cm having refractive index 1.5. A point object is embedded inside it at a distance 6 cm to the left of the centre. Locate the image for observer looking from left. Locate the image for observer looking from right.

Explanation

To solve the problem of locating the image formed by a glass sphere with a point object embedded in it, we will use the formula for refraction through spherical surfaces. Let's break down the solution step by step for both observers (from the left and from the right).

### Step 1: Understand the Setup
- We have a glass sphere with a radius \( R = 20 \, \text{cm} \) and a refractive index \( n_1 = 1.5 \) (for glass).
- The refractive index of air (outside the sphere) is \( n_2 = 1.0 \).
- The point object is located \( 6 \, \text{cm} \) to the left of the center of the sphere.

### Step 2: Determine Object Distance for Observer on the Left
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