question_answer 37)

                  Which of the following pairs of physical quantities does not have same dimensional formula?                 (a) Work and torque.                     (b) Angular momentum and Planck?s constant.                 (c) Tension and surface tension.                               (d)  Impulse and linear momentum.                

Answer:

                  (c) (a) \[\text{Work = Force  }\!\!\times\!\!\text{ }\,\text{distance = Torque}\]                  (b) \[L=\left( \frac{n}{2\pi } \right)h\]                  (c) Tension = Force and Surface tension                 = Force/length                 (d) Impulse = Change in linear momentum