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Which unit is used for measuring nuclear...

Which unit is used for measuring nuclear area of cross-section ?

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`1 barn = 10^(-28)m^2`
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PRADEEP-PHYSICAL WORLD AND MEASUREMENT-Very short Answer Questions
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  2. Express the average distance of earth from the sun in (i) light year (...

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  3. Which unit is used for measuring nuclear area of cross-section ?

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  4. What is the order of magnitude of 499 and 0.050 ?

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  5. What is the order of magnitude of radius of earth ?

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  6. What is the estimated size of aboservable universe ?

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  7. What is the average distance of moon from earth ?

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  8. Which insturment is used for measuring distance upto 10^(-4)m ?

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  9. How far away is the nearst star alpha centuri from earth ?

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  10. Name the device that can be used to measure the number of wavelengths ...

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  11. What does the word LASER stand for ?

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  12. What is the order of size of out galaxy ?

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  13. What is the order of mean free path of an aire molecule ?

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  14. What is the smallest mass measured indirectly so far?

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  15. How are the pitch and least count of a spherometer related ?

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  16. What is meant by angular diameter of moon ? What is its value?

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  17. What is the order of mass fo uiverse.

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  18. Which technique is used for measuring age of rocks, fossils etc.

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  19. Are there more microseconds in a second than the number of seconds in ...

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