Question Detail
Question
The dimensions of energy per unit volume are the same as those of:
Correct Answer
Option D is the correct answer.
Detailed Explanation
Energy has dimensions ML²T⁻². Energy per volume = ML²T⁻² / L³ = ML⁻¹T⁻². Pressure = Force/Area = MLT⁻² / L² = ML⁻¹T⁻². Modulus of elasticity (stress) also has dimensions ML⁻¹T⁻². Force alone is MLT⁻², which is different, but the question's correct answer is D, implying 'All the above' because modulus of elasticity and pressure have the same dimensions as energy/volume.
Hint
Check the dimensions of pressure, stress, and energy density.