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SL ARORA-Units and Measurements-Exercise
- What does the word RADAR stand for ? Also define it.
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- What does the acronym SONAR stand for ?
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- What does the word LASER stand for ?
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- What is a laser ?
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- Express 1 light year in terms of metre. What is its order of magnitude...
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- What types of waves are used in a SONAR ?
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- Define atomic mass unit. Express it in kg.
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- Define international standard of mass.
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- Define atomic mass unit. Express it in g.
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- How many times larger is a kg then an mg ?
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- How may metric tone are there in a teragram?
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- What is the order of mass of an electron ?
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- What is mass of universe ?
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- What is the smallest mass measured indirectly so far?
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- Why has 'second' been defined in terms of periods of radiation from Ce...
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- Human heart is an inbuilt clock. Comment
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- Which is the most accurate atomic clock ?
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- Which technique is used for measuring age of rocks, fossils etc.
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- How many times is a millisecond larger then a microsecond ?
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- How many microseconds in a second and How many number of seconds in a ...
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