question_answer 38)

                  Consider the quantities, pressure, power, energy, impulse, gravitational potential, electrical charge, temperature, area. Out of these, the only vector quantities are                 (a) Impulse, pressure and area                 (b) Impulse and area                 (c) Area and gravitational potential                 (d) Impulse and pressure

Answer:

                  (b) The direction of area vector is perpendicular to the plane of die surface.