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For which of the following colour, the magnifying power of a microscope will be maximum?

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Important Questions on Ray Optics

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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 217
The length of the compound microscope is 14 cm. The magnifying power for relaxed eye is 25. If the focal length of eye lens is 5 cm, then the object distance for objective lens will be
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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 218
If the focal length of objective and eye lens are 1.2 cm and 3 cm, respectively and the object is put 1.25 cm away from the objective lens and the final image is formed at infinity, then the magnifying power of the microscope is
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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 220
For observing a cricket match, a binocular is preferred to a terrestrial telescope because
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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 222
In Galilean telescope, if the powers of an objective and eye lens are respectively +1.25 D and -20 D, then for relaxed vision, the length and magnification will be
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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 223
An astronomical telescope has two lenses of focal powers 0.5 D and 20 D. Then it's magnifying power will be :
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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 224
The magnifying power of the objective of a compound microscope is 7. If the magnifying power of microscope is 35, the magnifying power of eye lens will be:
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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 226
Focal lengths of objective lens and eye piece lens of a microscope are 4 cm and 8 cm respectively. If the least distance of distinct vision is 24 cm and distance of the object from objective lens is 4.5 cm then, the magnifying power is:
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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 227
When the length of a tube of microscope is increased then, its magnifying power:-