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The limit of resolution of an instrument...

The limit of resolution of an instrument

A

varies directly with its resolving power

B

varies inversely with its resolving power

C

is equal to its resolving power

D

is not related to its resolving power

Text Solution

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The correct Answer is:
C
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The limit of resolution of an optical instrument arises on account of

How are resolving power and limit of resolution of an optical instrument related ?

The limit of resolution of a microscope is the least distance between two point objects which can be seen clearly and distinctively with it. For a naked eye, limit of resolution is about 10^(-4) m or 0.1 mm. The limit of resolution for a microscope is of the order of lambda/2 , where lambda is wavelength of light used. For an optical microscope , using visible light, limit of resolution is "500 nm"/2 =250 mm. This is 400 times smaller than naked eye. So the useful magnification produced by it is 400. Smaller is the limit of resolution, greater is the magnification that can be achieved. By using shorter wavelengths , we can improve resolution. For examination of a microorganism, much higher limit of resolution is needed, the Wave nature of electron provides a means for probes of very small size organisms. An electron beam accelerated by a high potential difference possess a very short wavelength. In an electron microscope magnetic lenses are used to control the path of electrons. The image of object is obtained on a fluorescent screen or on a photographic plate. The electron microscope with its high magnifying power and resolving power , is one of the most indispensable and powerful tool for research in science , medicine and industry. For an electron beam accelerated through a high potential difference V, limit of resolution is proportional to

The limit of resolution of a microscope is the least distance between two point objects which can be seen clearly and distinctively with it. For a naked eye, limit of resolution is about 10^(-4) m or 0.1 mm. The limit of resolution for a microscope is of the order of lambda/2 , where lambda is wavelength of light used. For an optical microscope , using visible light, limit of resolution is "500 nm"/2 =250 mm. This is 400 times smaller than naked eye. So the useful magnification produced by it is 400. Smaller is the limit of resolution, greater is the magnification that can be achieved. By using shorter wavelengths , we can improve resolution. For examination of a microorganism, much higher limit of resolution is needed, the Wave nature of electron provides a means for probes of very small size organisms. An electron beam accelerated by a high potential difference possess a very short wavelength. In an electron microscope magnetic lenses are used to control the path of electrons. The image of object is obtained on a fluorescent screen or on a photographic plate. The electron microscope with its high magnifying power and resolving power , is one of the most indispensable and powerful tool for research in science , medicine and industry. The working of an electron microscope uses properties of electrons related to

The limit of resolution of a microscope is the least distance between two point objects which can be seen clearly and distinctively with it. For a naked eye, limit of resolution is about 10^(-4) m or 0.1 mm. The limit of resolution for a microscope is of the order of lambda/2 , where lambda is wavelength of light used. For an optical microscope , using visible light, limit of resolution is "500 nm"/2 =250 mm. This is 400 times smaller than naked eye. So the useful magnification produced by it is 400. Smaller is the limit of resolution, greater is the magnification that can be achieved. By using shorter wavelengths , we can improve resolution. For examination of a microorganism, much higher limit of resolution is needed, the Wave nature of electron provides a means for probes of very small size organisms. An electron beam accelerated by a high potential difference possess a very short wavelength. In an electron microscope magnetic lenses are used to control the path of electrons. The image of object is obtained on a fluorescent screen or on a photographic plate. The electron microscope with its high magnifying power and resolving power , is one of the most indispensable and powerful tool for research in science , medicine and industry. The advantage of electron microscope over optical microscope is that

The error due to resolution of a measuring instrument is

The limit of resolution of a 100 cm telescope for lambda=5000Å is equal to

Estimate the limit of resolution of a human eye, for the light of wavelength 500 nm. (Take diameter of human eye equal to 2 mm).

ARIHANT NEET-CELL: THE UNIT OF LIFE-Chapter Exercises A Taking it together (Assorted Questions of the Chapter for Advanced Level Practise )
  1. Which types of lysosomes contribute to the ageing process?

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  2. The compound microscope is based upon the principle that

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  3. The limit of resolution of an instrument

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  4. if a biochemical analysis of mitochondria is to be done, the best proc...

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  5. In recent years, considerable attention is being given to DNA protein ...

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  6. Autoradiography technique is used to

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  7. Which of the following statements was not explained in the cell theory...

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  8. Choose the correct statement.

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  9. Lysosomes are single membrane bound organelles. Which of the following...

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  10. Cis and trans face of golgi body areand , respectively.

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  11. Choose the correct statement.

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  12. How many of the given organelles have single membrane? Ribosomes, ce...

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  13. How many of the given features are true for both endoplasmic reticulum...

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  14. Choose the correct match.

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  15. The organelle which consists of enzymes such as catalase, urease, oxid...

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  16. Some scientists include lyososomes in microbodies but these can be dif...

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  17. Choose the incorrect match.

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  18. How many of the given features are similar for both eukaryotic and pro...

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  19. The following diagram shows some of the missing structures in a plant ...

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  20. The eukaryotic genome differs from the prokaryotic genome because :

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