Question

The temperature of gas is increased from 27${}^o$C to 127${}^o$C. The ratio of its mean kinetic energies will be

• A. $\frac{3}{4}$
• B. $\frac{4}{3}$
• C. $\frac{9}{16}$
• D. $\frac{16}{9}$

Answer 1

The correct option is A $\frac{3}{4}$

We know that , K.E $\alpha$ T ; where, T is absolute temperature
So, ratio of kinetic energies = ratio of temperatures (in Kelvin)
= $\frac{300K}{400K}=\frac{3}{4}$