$J m^{- 3}$ may be the unit of:

strain energy density

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modulus of elasticity

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strain energy

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both A and B

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Solution

The correct option is D both A and B
Strain energy density $= \frac{E n e r g y}{V o l u m e} = J / m^{3}$

Modulus of elasticity $= \frac{f o r c e}{A r e a} = \frac{N}{m^{2}} = \frac{N m}{m^{3}} = J / m^{3}$

Strain energy $= J$

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