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The dimension ML-1 T- 2 can correspond to(a) moment of a force(b) surface tension(c) modulus of elasticity(d) coefficient of viscosity. |
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Answer» (c) modulus of elasticity Explanation: The dimension of force is MLT⁻² and of length is L. So the dimension of the moment of a force will be ML²T⁻². So the option (a) is not true. The unit of surface tension is force per unit length. So the dimension of surface tension is ML⁰T⁻². So the option (b) is not true. The unit of the coefficient of viscosity is Pascal-second. Which is Force*second/area. The dimension will be MLT⁻²*T/L² =ML⁻¹T⁻¹. So the option (d) is not true. The modulus of elasticity is stress/strain. the strain is dimensionless. So the unit of elasticity will be the same as the unit of stress. It is force/area. The dimension will be MLT⁻²/L² =ML⁻¹T⁻². Hence the option (c). |
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