An astronomical telescope has objectives and eye-piece lenses of focal length 3.5m and 5cm respectively. Determine the magnifying power of the telescope whe...
Question 1 Report
An astronomical telescope has objectives and eye-piece lenses of focal length 3.5m and 5cm respectively. Determine the magnifying power of the telescope when in normal adjustment
Answer Details
The magnifying power of a telescope is given by the formula:
Magnifying power = (focal length of objective lens) / (focal length of eyepiece lens)
Substituting the given values, we have:
Magnifying power = (3.5 m) / (0.05 m) = 70
Therefore, the magnifying power of the telescope when in normal adjustment is 70.0. The correct option is (a) 70.0.
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