Kinetic Theory - Result Question 18

18. Relation between pressure $(P)$ and energy $(E)$ of a gas is

[1991]

(a) $P=\frac{2}{3} E$

(c) $P=\frac{1}{2} E$

(b) $P=\frac{1}{3} E$

(d) $P=3 E$

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Answer:

Correct Answer: 18. (a)

Solution:

  1. (a) $P=\frac{1}{3} N m c^{2}=\frac{2}{3} \times(\frac{1}{2} N m) c^{2}=\frac{2}{3} K \cdot E$