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The force of interaction between tow atoms is given by F = αβ exp ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ α − kt x 2 ; where x is the distance, k is the Boltzmann constant and T is temperature and α and β are two constants. The dimension of β is :

1. M 2 L 2 T –2
2. M 2 LT –4
3. MLT –2
4. M 0 L 2 T –4

Correct answer: M 2 LT –4

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