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The dimensional formula of stress is __________

Question and options

The dimensional formula of stress is __________
  1. [M0L1T2]\mathrm{[M^{0}L^{1}T^{2}]}
  2. [M1L0T−2]\mathrm{[M^{1}L^{0}T^{-2}]}
  3. [M1L−1T−2]\mathrm{[M^{1}L^{-1}T^{-2}]}
  4. [M1L−1T−1]\mathrm{[M^{1}L^{-1}T^{-1}]}

Answer and explanation

Correct answer: C - \(\mathrm{[M^{1}L^{-1}T^{-2}]}\)
Stress = force/area = [MLT−2]/[L2]=[M1L−1T−2]\mathrm{[MLT^{-2}]/[L^{2}] = [M^{1}L^{-1}T^{-2}]}.

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