Class XI According to the principle of homogeneity of dimensions we can add or subtract any physical quantities we can add or subtract any physical quantities we can add or subtract similar physical quantities we can subtract similar physical quantities Electric charge is expressed in SI units as derived unit Real unit complex unit a base unit The units of pressure are the same as the units of stress plasticity strain elasticity A dimensionally consistent equation is necessarily correct is not necessarily correct is always correct is nearly correct The dimensions of a physical quantity are the sum of all the number of base quantities the powers (or exponents) to which the base quantities are raised to represent that quantity the sum of all the number of base quantities the sum of the exponents of base quantities Do you really want to submit this quiz? Cancel Submit Quiz