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Define light year....

Define light year.

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The distance travelled by light in vacuum n one year is called light year. 1 light year `=9.46 xx 10^115m`
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PATHFINDER-UNITS AND MEASUREMENT-QUESTION BANK
  1. Name any two sources of systematic errors.

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  2. Name a method for the measurement of large distances.

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  3. Define light year.

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  4. What does SONAR stand for?

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  5. Convert (i) 1 kgm^(2)s^(-2) into gcm^(2)s^(-2) and (ii) 1 m into light...

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  6. What is the relation between 1 light year and one parsec?

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  7. The initial and the final temperature of an oll bath are (25 +0.1)^@ a...

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  8. What is the maximum percentage error in the measurement of K,E.If the ...

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  9. The dimensional formula for Planck's constant and angular momentum ar...

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  10. Name three physical quantities having the same dimensions.

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  11. State the number of significant figures in 5.003.

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  12. What is the maximum possible relative error in Z, where Z =A^n B^m?

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  13. What is the difference between A^@ and AU?

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  14. if an atom were enlarged to the size of the earth (approx 10^7m ), ho...

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  15. Write the units of Vander Waals constants a and b.

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  16. A new unit of length is chosen such that the speed of light in vacuum ...

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  17. Y=Asin (omegat - kx), t and x stand for time and distance respectively...

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  18. Round off to 3 significant figures 20.96m

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  19. Round off to 3 significant figures 17.33m

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  20. A student measures the thickness of a human hair by looking it throug...

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