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प्रश्न
How can the resolving power of a compound microscope be increased? Use relevant formula to support your answer.
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उत्तर
The resolving power of compound microscope is given by `(2μsinθ)/λ`
The resolving power of the compound microscope can be increased by
(i) decreasing the wavelength (λ) of the light used
(ii) increasing the refractive index (μ) of the medium
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संबंधित प्रश्न
Define resolving power of a microscope and write one factor on which it depends
Does the magnifying power of a microscope depend on the colour of the light used? Justify your answer.
An object is placed at a distance u from a simple microscope of focal length f. The angular magnification obtained depends
The focal length of the objective of a compound microscope if fo and its distance from the eyepiece is L. The object is placed at a distance u from the objective. For proper working of the instrument,
(a) L < u
(b) L > u
(c) fo < L < 2fo
(d) L > 2fo
A simple microscope is rated 5 X for a normal relaxed eye. What will be its magnifying power for a relaxed farsighted eye whose near point is 40 cm?
Can the image formed by a simple microscope be projected on a screen without using any additional lens or mirror?
A microscope is focussed on a mark on a piece of paper and then a slab of glass of thickness 3 cm and refractive index 1.5 is placed over the mark. How should the microscope be moved to get the mark in focus again?
A thin converging lens of focal length 5cm is used as a simple microscope. Calculate its magnifying power when image formed lies at:
- Infinity.
- Least distance of distinct vision (D = 25 cm).
On increasing the focal length of the objective, the magnifying power ______.
| A compound microscope consists of two converging lenses. One of them, of smaller aperture and smaller focal length, is called objective and the other of slightly larger aperture and slightly larger focal length is called eye-piece. Both lenses are fitted in a tube with an arrangement to vary the distance between them. A tiny object is placed in front of the objective at a distance slightly greater than its focal length. The objective produces the image of the object which acts as an object for the eye-piece. The eye-piece, in turn, produces the final magnified image. |
Which of the following is not correct in the context of a compound microscope?
