An observer loop at a tree of height $15$ m with a telescope of magnifying power $10$ . To him the tree appears.

10

times taller

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15

times taller

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10

timer nearer

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15

timer nearer

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Solution

The correct option is B $10$ timer nearer
The angle subtended at the eye becomes $10$ times larger, this happens only when the tree appear $10$ times nearer.

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An observer looks at a distant tree of height 10m with a telescope of magnifying power of 20. To the observer the tree appears:

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