Physics

In three-dimensional space, the direction of a vector might be described in terms of

At any point along a streamline in an ideal fluid in steady flow, the sum of the pressure, the potential energy per unit volume and the kinetic energy per unit volume have the same value. This concept is known as

When the two waves of the same frequency speed and amplitude travelling in opposite directions are superimposed

The fluid is the same in all directions. This is known as _________

Which of the ff thermometers is best suited for measuring a temperature of nearly \( 1500^\circ\text{C} \) ?

The energy stored in a stretched elastic material such as spring is

Which of the ff is true? the density of water

Cohesion is the attraction between like _______

The quantity is known as specific heat is based on:

Which one of the ff processes of heat transfer requires the presence of a fluid?

When salt is added to water, its boiling point

Which one of the ff propagates with the same speed as speed of light?

The surface of the thermos flask is silvered for minimizing heat transfer by what process?

Heat will flow from one body to another in thermal contact with it, when they differ in

The amount of heat which is absorbed during the change of state of a substance without rise in its temperature is called its

The scientist who systematically demonstrated the equivalence of mechanical energy and heat was

On a sunny day at the beach, the sand gets so hot and the water stays relatively cool is due to the difference in ___________ of water and sand

The instrument, which measures temperature by radiation, is called

When the temperature of an ideal gas is increased at constant pressure,

A mercury thermometer is constructed at