Question:
An observer looks at a tree of height 15 m with a telescope of magnifying power 10. To him the tree appears
An observer looks at a tree of height 15 m with a telescope of magnifying power 10. To him the tree appears
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Magnifying power of telescope: \(M = \frac{f_o}{f_e}\). Angular magnification = \(\frac{\beta}{\alpha}\).
Updated On: Apr 23, 2026
- 10 times taller
- 15 times taller
- 10 times nearer
- 15 times nearer
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
Magnifying power of telescope = ratio of angle subtended at eye by image to angle subtended by object. For distant objects, it also equals \(f_o/f_e\).
Step 2: Detailed Explanation:
A telescope makes objects appear closer, not larger. Magnifying power 10 means object appears 10 times nearer. The angular size increases, but the perceived effect is that the object is brought 10 times closer.
Step 3: Final Answer:
Thus, tree appears 10 times nearer.
Magnifying power of telescope = ratio of angle subtended at eye by image to angle subtended by object. For distant objects, it also equals \(f_o/f_e\).
Step 2: Detailed Explanation:
A telescope makes objects appear closer, not larger. Magnifying power 10 means object appears 10 times nearer. The angular size increases, but the perceived effect is that the object is brought 10 times closer.
Step 3: Final Answer:
Thus, tree appears 10 times nearer.
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