The magnifying power of a microscope with an objective of 5 mm focal length is 400. The length of its tube is 20 cm. Then the focal length of the eye-piece is [MP PMT 1991]

200 cm

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160 cm

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2.5 cm

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0.1 cm

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Solution

The correct option is C
2.5 cm

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Q. The magnifying power of a microscope with an objective lens of 5 mm focal length is 400. The length of its tube is 20 cm. Then the focal length of the eyepiece is

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The magnifying power of a microscope with an objective of 5 mm focal length is 400. The length of its tube is 20 cm. Then the focal length of the eye-piece is [MP PMT 1991]

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focal length is

400.

The length of its tube is

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Then the focal length of the eye-piece is

An angular magnification (magnifying power) of 30X is desired using an objective of focal length 1.25 cm and an eyepiece of focal length 5 cm. How will you set up the compound microscope?

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The magnifying power of a microscope with an objective of 5 mm focal length is 400. The length of its tube is 20 cm. Then the focal length of the eye-piece is [MP PMT 1991]

The correct option is C 2.5 cm

The correct option is C
2.5 cm