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The number of gas molecules striking per second per square meter of the top surface of a table placed in a room at 20°C and 1 atmospheric pressure is of the order of (kB = 1.4 x 10–23 J/K, and the average mass of an air molecules is 5 x 10–27 kg)

(A)   1027 

 (B)   1023 

 (C)   1025 

(D)   1029

1 Answer

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Best answer

Correct option (A) 1027

Explanation:

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