Question
The fact that radiosignals reach the earth from outside the atmosphere, was discovered accidently by(a) K.G. Jansky(b) Millikan(c) Aryabhatta(d) Prof. Kanu
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Practice Test
Practice Test 1
Assertion: The electrical conductivity of earth's atmosphere increase with altitude. Reason: The high energy particles (i.e., gamma rays and cosmic rays) coming from outer space while entering earth's atmosphere causes ionisation of the atoms of the gases present in atmosphere. (A) $\mathrm{A}$ (B) $\mathrm{B}$ (C) $\bar{C}$ (D) D
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