Two flasks X and Y have capacity 1 L and 2L respectively and each of them contains 1 mole of a

gas. The temperatures of the flasks are so adjusted that average speed of molecules in Xis twice

as those in Y. The pressure in flask X would be

(1) same as that in Y                    (2) half of that in Y

(3) twice of that in Y                    (4) 8 times of that in Y