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When a beam of light is used to determin...

When a beam of light is used to determine the position of an object, the maximum accuracy is achieved if the light is

A

polarised

B

of longer wave length

C

unpolarised

D

of shorter wave length

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-WAVES OPTICS-EXERCISE -IA (DIFFRACTION)
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  2. Two point sources of sound are kept at a separation of 10 cm. They vib...

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  3. When a beam of light is used to determine the position of an object, t...

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  4. In Fresnel.s diffraction wavefront must be

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  5. The source is at some distance from an obstacle. Distance between obst...

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  6. A very small opaque disc is placed in the path oa a monochromatic ligh...

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  7. A diffraction pattern is obtained using a beam of red light. What happ...

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  8. In a diffraction pattern the width of any fringe is

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  9. Yellow light is used in a single slit diffraction experiment with a sl...

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  10. In diffraction froma a single -slit, the angular width of the centre m...

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  11. The correct relation between limit of resolution and resolving power i...

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  12. The resolving power of electron microscope is

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  13. The limit of resolution of eye is approximately

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  14. The angular resolution of the telescope is determined by the

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  15. In telescope of objective diameter (2a), the radius of the central bri...

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  16. For better resolution, a telescope must have a

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  17. What will be ratio (D"/"f) in microscope where, D is the diameter of t...

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  18. The resolving power of a microscope is basically determined by the

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  19. If the red light is replaced by blue light illuminating the object in ...

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  20. For a telescope to have large resolving power, then the

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