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Relating Translational KE and T

In a gas, 10

Question

In a gas, 10% molecules have a velocity of 2 km/sec and 8% molecules have a velocity of 1.5 km/sec and 82% molecules have a velocity 1 km/sec. The most probable velocity of molecules is:

A

1 km/sec

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B

1.5 km/sec

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C

2 km/sec

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D

15 km/sec

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Solution

The correct option is C 1 km/sec
The most probable velocity of molecules is $1$ km/sec. It is the speed possessed by most of the molecules. The maximum of this function represents the speed at which most of the molecules travel. This speed is known as most probable speed.

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