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A: If objective and eye-piece of compoun...

A: If objective and eye-piece of compoun microcscope are interchanged, then i becomes a telescope.
R: Focal length of objective of telescope i small.

A

Both assertion and reason are true and the reason is correct explanation of the assertion.

B

Both assertion and reason are true but reason is not correct explanation of the assertion

C

Assertion is true but the reason is false.

D

Both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
D

Both assertion and reason are false.
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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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  3. A: If objective and eye-piece of compoun microcscope are interchanged,...

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  5. A: Magnified image is obtained by microscope. R: Angular dispersio...

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  7. A spherical mirror gives real image 3 times greater than object. If di...

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  8. Focal length of plane mirror is ......

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  9. A light of ray incidents normally on one side of equilateral prism. If...

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  10. Two thin lenses of focal lengths f1 and f2, are in contact and coaxial...

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  11. The colour of rays is the property of ......

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  12. A critical angle for a medium is 60^@. Then the refractive index of th...

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  13. A wavelength of a monochromatic light in vacuum is lambda . It travels...

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  14. An object is placed at a distance 40 cm in front of concave mirror. Fo...

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  15. A real object is placed at a distance f from the pole of a convex mirr...

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  16. For a prism of refractive index 1.732, the angle of minimum deviation ...

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  19. A plane mirror produces a magnification of ….....

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