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प्रश्न
| 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. |
In a compound microscope, the images formed by the objective and the eye-piece are respectively.
पर्याय
virtual, real
real, virtual
virtual, virtual
real, real
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उत्तर
real, virtual
Explanation:
The objective lens generates a real image that is located between the focus and the optical centre of the eye-piece lens. As a result, the eye-piece lens creates a virtual image.
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संबंधित प्रश्न
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Draw a ray diagram to show the working of a compound microscope. Deduce an expression for the total magnification when the final image is formed at the near point.
In a compound microscope, an object is placed at a distance of 1.5 cm from the objective of focal length 1.25 cm. If the eye piece has a focal length of 5 cm and the final image is formed at the near point, estimate the magnifying power of the microscope.
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(a) Simple microscope
(b) Compound microscope
(c) Astronomical telescope
(d) Galilean telescope
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(A) Line spectra contain information about atoms.
(B) Band spectra contain information about molecules.
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How does the resolving power of a microscope change when
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(ii) the wavelength of the incident light is increased ?
Justify your answer in each case.
With the help of a ray diagram, show how a compound microscope forms a magnified image of a tiny object, at least distance of distinct vision. Hence derive an expression for the magnification produced by it.
