Physics

Work and Energy have the same physical quantities.

When a beam of light is passed through a colloidal solution, colloidal particles scatter light and we can see the path of light. Thus, Tyndall effect is observed.

distance of trolley S = 10m_x000D_ force F =50N_x000D_ work done = F. S_x000D_ =50×10_x000D_ =500J

When a spring is compressed, it stores energy in form of elastic potential energy.

Displacement can be either positive or negative.

In uniform circular motion, the linear velocity is perpendicular to radius vector.

Law of conservation of mass validates the statement that matter can neither be created nor destroyed.

The quartz crystal oscillates (vibrates back and forth) at a precise frequency: exactly 32768 times each second. This is due to Piezoelectric Effect. Piezoelectric Effect is the ability of certain materials to generate an electric charge in response to applied mechanical stress.

A gradual increase in loudness is known as crescendo.

In a bipolar junction transistor the base has the least concentration of impurity.