Mole of an ideal gas is contained in a cubical volume V, ABCDEFGH at 300 K (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.

Options

A. the pressure on EFGH would be zero
B. the pressur all the faces will the equal
C. the pressure pf EGGH would be double the pressure on ABCD
D. the pressure on EFGH would be half that on ABCD

Answer

A

Explanation

In an ideal gas, when a molecule colides elasitically with a wall, the momentum transferred to each molecule will be twice the manitude of its normal momentum. For the face EFGH, it transfere only half of that on other faces.