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10 QA on Earth atmosphere | Learn Physics

10 Question-Answer on Earth’s atmosphere 1.        The earth is surrounded by atmosphere up  to a height of about (a)     200 km (b)    400 km (c)     500 km (d)    600 km Ans: (b) 2.        Clouds are contained in a layer from the earth’s surface, which is called (a)     Troposphere (b)    Stratosphere (c)     Mesosphere (d)    Ionosphere Ans: (a)   3.        The density of air at the top of stratosphere in comparison to that of near the eart’s surface is (a)     10 -2 times (b)    10 -3 times (c)     10 2 times (d)    10 3 times Ans: (b) 4.        The atmosphere between the heights of 50 km and 80 km is called (a)     Mesosphere (b)    Ozono...