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An optical instrument uses a 25 D object...

An optical instrument uses a 25 D objective and 20 D eyepeice with a tube length of 25 cm when eye is least strained

A

The instrument is a telescope with angular magnification 20

B

The instrument is a microscope with angular magnification 20

C

The instrument is a telescope with angular magnification 24

D

The instrument is a microscope with angular magnification 24

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The correct Answer is:
B
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