In a certain region of space there are only 5 gaseous molec…

Physics Kinetic Theory of Gases Pressure MCQ (Single Correct)

In a certain region of space there are only 5 gaseous molecules per cm 3 on an average. The temperature there is 3 K. The pressure of this gas is

( k B = 1.38 × 10 –23 J mol –1 K –1 )

20.7 × 10 –16 N m –1

20.7 × 10 –17 N m –1

10.7 × 10 –16 N m –1

10.7 × 10 –17 N m –1

Text Solution

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The correct answer is:

Let n be the number of molecules in the gas

Here,

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