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If the focal length of the eye piece of ...

If the focal length of the eye piece of a telescope is doubled, its magnifying power (m ) will be

A

2m

B

3m

C

`m/2`

D

4m

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UNITED BOOK HOUSE-MODEL PAPER SET-03-EXERCISE
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  2. A convex lens of focal lengths 30 cm produces 5 times magnified real ...

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  3. If the focal length of the eye piece of a telescope is doubled, its ma...

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  5. Write the variation of magnetic moment of an electron revolving in Boh...

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  6. Which of the following is not a semiconductor?

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  9. State Lenz’s law.

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  11. What is dispersive power?

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  13. Write the Wheatstone bridge principle.

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  16. Mention two characteristics of electromagnetic waves.

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  17. The radioactive decay constant is 4.28 xx 10^-4 year^-1. What is the h...

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  18. Explain why sky waves ate suitable for long range communication.

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  19. What is surface charge density?

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