(i) Draw a neat labelled ray diagram of an astronomial telescope in normal adjustment . Explain briefly its working .
(ii) An astronomical telescope uses two lenses of powers 10 D and 1 D . What is its magnifying power in normal adjustment ?

Explanation

### Step-by-Step Solution:

#### Part (i): Ray Diagram and Explanation of an Astronomical Telescope in Normal Adjustment

1. **Draw the Ray Diagram**:
- Start by drawing two lenses: the objective lens on the left and the eyepiece lens on the right.
- Label the objective lens as \( L_1 \) and the eyepiece lens as \( L_2 \).
- Indicate the focal points of both lenses. For the objective lens, label the focal point as \( F_1 \) and for the eyepiece lens, label it as \( F_2 \).
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