1023 molecules of a gas strike a target of area 1 m2 at angle 45∘ to normal and rebound elastically with speed 1 kms-1. The impulse normal to wall per molecule is:
[Given: mass of molecule = 3.32×10−27 kg]
(a) 4.7×10−24 kg ms-1
(b) 7.4×10−24 kg ms-1
(c) 3.32×10−24 kg ms-1
(d) 2.33 kg ms-1