(A): The only difference between mean velocity and mean speed is that mean velocity is a scalar and mean speed is a vector (R): Magnitude of mean velocity of the gas molecules is same as their mean speed.

(A): The only difference between mean velocity and mean speed is that

1.	(A): The only difference between mean velocity and mean speed is that mean velocity is a scalar and mean speed is a vector (R): Magnitude of mean velocity of the gas molecules is same as their mean speed.
Answer» Both (A) and ( R) are true and (R ) is the correct EXPLANATION of (A) Both (A) and (R ) are true and (R) is not the correct explanation of (A) (A) is true but (R ) is FALSE Both (A) and (R ) are false Answer :D