Home » UPSC CAPF » Consider the following physical quantities : Energy, power, pressure,

Consider the following physical quantities : Energy, power, pressure,

June 1, 2025 by rawan239

Consider the following physical quantities :
Energy, power, pressure, impulse, temperature, gravitational potential
Which of the above is / are the vector quantity/quantities ?

Impulse only

Impulse and pressure only

Impulse, temperature and pressure

Gravitational potential

This question was previously asked in

UPSC CAPF – 2016

Download PDF Attempt Online

Among the given physical quantities, only Impulse is a vector quantity. A vector quantity has both magnitude and direction. Impulse is defined as the change in momentum of an object, and momentum (mass × velocity) is a vector quantity. Impulse is also equal to the force multiplied by the time interval over which the force acts (when force is constant), and force is a vector.

Identifying whether a physical quantity is a vector or a scalar is a basic concept in physics.

Energy, power, pressure, temperature, and gravitational potential are all scalar quantities. Scalar quantities are completely described by their magnitude alone. While pressure involves force (a vector) acting over an area (direction can be associated with area normal), pressure itself at a point is a scalar property of the fluid or material. Gravitational potential is potential energy per unit mass, and potential energy is a scalar.

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