Physics And Measurement Question 122

Question: The dimensions of inter atomic force constant are

[UPSEAT 1999]

Options:

A) $ M{{T}^{-2}} $

B) $ ML{{T}^{-1}} $

C) $ ML{{T}^{-2}} $

D) $ M{{L}^{-1}}{{T}^{-1}} $

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Answer:

Correct Answer: A

Solution:

$ K=Y\times r _{0} $ = $ [M{{L}^{-1}}{{T}^{-2}}]\times [L] $ = $ [M{{T}^{-2}}] $

$ Y $ = Young’s modulus and $ r _{0} $ = Interatomic distance



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