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1 mole of an ideal gas is contained in a cubical volume V, ABCDEFGH at 300 K  as shown in the figure.

 One face of the cube (EFGH) is made up of a material which totally absorbs any gas

 molecule incident on it. At any given time

 

a
The pressure on EFGH would be zero
b
The pressure on all the faces will be equal
c
The pressure of EFGH would be double the pressure on ABCD
d
The pressure on EFGH would be half that on ABCD.

detailed solution

Correct option is D

In the ideal case that we normally consider each collision transfers twice the magnitude of its normal momentum. On the face EFGH, it transfers only half of that.

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