A small telescope has an objective lens of focal length `140 cm` and eye piece of focal length `5.0 cm`. What is the magnifying power of telescope for viewing distant objects when
(a) the telescope is in normal adjustment (i.e. when the image is at infinity)
(b) the final image is formed at the least distance of distinct vision `(25 cm)`.

Explanation

To solve the problem step by step, we will calculate the magnifying power of the telescope for two different scenarios: when the telescope is in normal adjustment and when the final image is formed at the least distance of distinct vision.

### Given Data:
- Focal length of the objective lens, \( F_0 = 140 \, \text{cm} \)
- Focal length of the eyepiece, \( F_E = 5.0 \, \text{cm} \)
- Least distance of distinct vision, \( D = 25 \, \text{cm} \)

### Part (a): Magnifying Power in Normal Adjustment
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