question_answer 16)

                  1 mole of an ideal gas is contained in a cubical volume V, AQBCDEFGH at 300 K fig. 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 oil EFGH would be zero.                 (b) the pressure on all die faces will the equal.                 (c) the pressure of EFGH would be double the pressure, on ABCD.                 (a) die pressure on EFGH would be hall' that on ABCD.

Answer:

                  (d) Pressure exerted on the face of die cube is due to transfer of momentum. When a molecule collides with wall and reflects back, then in case of face EFGH, the transfer of momentum is half of the momentum transferred to the face ABCD.