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Q. Large astronomical telescopes always use as objective
Large astronomical telescopes always use as objective combination of lenses.
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Q. If a copper wire is increased to double its length, its resistance will become
Q. Ultrasound devices operate with minimum frequency from
Q. For a body moving with uniform acceleration its final velocity equals ________
Q. Pure water freezes at what temperature?
Q. Which one of the following is responsible for the working of Newton's colour disc experiment ?
Q. The S.I. unit of electric charge is:
Q. According to special theory of relativity the mass of a particle
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