A. increases by two times
B. increases by four times
C. decreases by two times
D. decrease by four times
Submitted by: Arslan Khan shar
The kinetic energy of gas molecules is proportional to the square of their speed. If the speed of the gas molecules increases by a factor of two, the kinetic energy will increase by the square of two.
Thus, the kinetic energy will increase by four times.
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The correct answer to the question: "If speed of gas molecules increases by twice on heating. What will be their kinetic energy?" is "increases by four times".