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When a beam of light is used determine t...

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

A

is converging

B

has more wavelength

C

has small wavelength

D

has more intensity

Text Solution

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The correct Answer is:
C

has small wavelength
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KUMAR PRAKASHAN-RAY OPTICS AND OPTICAL INSTRUMENTS-SECTION-D (MULTIPLE CHOICE QUESTIONS (MCQs))(MCQs ASKED IN COMPETITIVE EXAMS)
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  8. Focal lenghts of objective and eye-piece of telescope 200 cm and 2 cm ...

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  9. Light ray bends when it travels from one medium to another medium beca...

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  11. Flint glass lens is made of refractive index 1.5. When it is placed in...

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  12. The leaf which has only green pigament is given light of 0.6328 um wav...

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  13. Aperture of lens of a camera is f and its exposure time is (1)/(60) s....

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  14. Intensity of point-like source at 1000 m is I. it is changed to 16I, t...

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  15. Focal lengths of objective and eye-piece of microscope is 1.6 cm and 2...

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  16. Power of a convex lens of refractive index 3/2 is 2.5 D in air. If it ...

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  17. The surface which doesn.t reflect is given incidence light with 18 W//...

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  18. For concave mirror, image obtained at d2 from focus for object at d1 f...

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  19. Object of small length 1 is placed on the axis of concave mirror of fo...

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  20. Two lenses of focal lengths -20 cm and + 10 cm are conneceted to form ...

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