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Q. Ultra violet radiations of the Sun do not reach the earth because, earth's atmosphere is surrounded by
Ultra violet radiations of the Sun do not reach the earth because, earth's atmosphere is surrounded by Ozone.
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Q. For the measurement of temperature of the order of 400° C, we will prefer
Q. The ordinary and maximum tolerance limit of sound by human being is
Q. Which of the following is a good conductor of heat but a bad conductor of electricity ?
Q. In quantum mechanics a particle is represented by a
Q. What is the frequency of ac current we use at houses?
Q. Low voltage cables are meant for use up to
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