Class XI

The relative error in a physical quantity raised to the power k is.
  1. (k – 1) times the absolute error in the individual quantity
  2. (k – 1) times the relative error in the individual quantity
  3. k times the absolute error in the individual quantity
  4. k times the relative error in the individual quantity
The dimensions of a physical quantity are
  1. the sum of all the number of base quantities
  2. the powers (or exponents) to which the base quantities are raised to represent that quantity
  3. the sum of all the number of base quantities
  4. the sum of the exponents of base quantities
According to the principle of homogeneity of dimensions
  1. we can add or subtract any physical quantities
  2. we can add or subtract any physical quantities
  3. we can add or subtract similar physical quantities
  4. we can subtract similar physical quantities
The volume of a cube of side 2 cm is equal in m3m3 to
  1. 0.008
  2. 8.0×10−6
  3. 0.0008
  4. 0.08
The units of pressure are the same as the units of
  1. stress
  2. plasticity
  3. strain
  4. elasticity
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