Question

A cylinder of capacity 20 litres is filled with H₂ gas. The total average kinetic energy of translatory motion of its molecules is 1.5 x 10⁵ J . The pressure of hydrogen in the cylinder is

(a) 2 x 10⁶ N/m²

(b) 3 x 10⁶ N /m²

(c) 4 x10⁶ N /m²

(d) 5 x 10⁶ N /m²

Answer 1

Correct option  (d) 5 x 10⁶ N /m²

Explanation:

Kinetic energy E = 1.5 x 10⁵ J, 

volume V = 20 litre = 20 x 10^-3 m³