If 1022 gas molecules each of mass 10−26 kg collide with a surface (perpendicular to it) elastically per second over an area 1 m2 with a speed 104 m/s, the pressure exerted by the gas molecules will be of the order of:
a. 104 N/m2
b. 108 N/m2
c. 103 N/m2
d. 1016 N/m2