Force can change the shape of an object but cannot change the mass.

A catalyst cannot change

The deforming force produces a change in the shape of the body without changing its volume, strain produced is called

A : Internal forces can change the kinetic energy but not the momentum of the system. R : The net internal force on a system is always zero.

The following questions refer to the electrolysis of copper sulphate solution using copper electrodes . Compare the change in the mass of the cathode with the change in the mass of the anode .

(A): The distance of a star from earth can be measured by parallax method. (R): The change in position of an object due to change in the point of observation is called parallax.

A solid object is placed in water contained in an adiabatic container for some time. The temperature of water falls during the period and there is no appreciable change in the shape of the object. The temperature of the solid object

A : Due to inertia an object is unable to change by itself its state of rest and uniform motion. R : An object cannot change its state unless acted upon by an unbalanced external force.

Internal forces can change

Internal forces can change

The shape of guard cells changes due to change in the