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With a neat labelled diagram, explain the construction and working of a compound microscope.

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contruction of a compound microscope:
(1) A compound microscope consists of a metal tube fitted with two convex lenses at the two ends. These lenses are called the objective lens (the lens directed towards the object ) and the eyepiece (the lens directed towards the eye) . Both the lenses are small in size, but the cross section of the objective lens is less than that of the eyepiece. The objective lens has a short focal length, The focal length of the eyepiece is more than that of the objective lens.
(2) The metal tube is mounted on a stand. The principal axes of the objective lens and the eyepiece are along the same line. The distance between the object and the objective lens can be changed with a screw . It is possibel to change the distance between the objective lens and the eyepiece.
Working :
(1) The object to be observed is illuminated and placed in front of the objective lens, slightly beyond the focal length of the objective lens. Its real , inverted and enlarged image is formed by the objective lens on the other side.
(2) This intermediated image lies within the focal length of the eyepiece. It serves as an object for the eyepiece. The eyepiece works as a simple microscope . The final image is virtual , highly enlarged and inverted with respect to the original object. It can be formed at the minimum distance of distinct vision from the eyepiece. The final image is observed by keeping the eye close to the eyepiece.
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NAVNEET PUBLICATION - MAHARASHTRA BOARD-LENSES-Answer the following questions :
  1. With a neat labelled diagram, explain the working of a simle microscop...

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  2. What does a simple microscope consist of ? What is the order of magni...

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  3. With a neat labelled diagram, explain the construction and working of ...

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  4. State two uses of a compound microscope .

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  5. What will happen if in a compound microscope , the objective lens is l...

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  6. In which type of microscope do you find the lens arrangement as shown ...

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  7. Write in brief , the working of this microscope.

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  8. Where is this microscope used ?

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  9. Which type of microscope has the arrangement of lenses shown in the fo...

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  10. Label the figure correctly .

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  11. Write the working of this microscope .

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  12. Where is this microscope used ?

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  13. Suggest a way to increase the efficiency of this microscope.

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  14. With a neat labelled diagram, explain the working of a refracting tele...

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  15. Explain the working of an astronomical telescope using refraction of l...

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  16. State the used of a telescope.

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  17. Observe the figure and answer the question. Which optical instr...

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  18. Observe the figure and answer the question. This optical instru...

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  19. Observe the figure and answer the question. How can we get diff...

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  20. Observe the figure and answer the question. Draw the figure aga...

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