### Degrees of Freedom for Translatory Motion

The number of degrees of freedom of a dynamical system is defined as the total number of co-ordinates or independent variables required to describe the......

### How Pressure Exerted by a Gas?

The molecules of a gas are in a state of random motion. They continuously collide against the walls of the container. During each collision, momentum......

### Applications of Doppler Effect

Applications of Doppler Effect (i) To measure the speed of an automobile An electromagnetic wave is emitted by a source attached to a police car.......

### What is Doppler Effect?

The whistle of a fast moving train appears to increase in pitch as it approaches a stationary observer and it appears to decrease as the......

### Explain Resonance Air Column Apparatus

The resonance air column apparatus consists of a glass tube G about one metre in length (Figure) whose lower end is connected to a reservoir......

### Laws of Transverse Vibrations of Stretched Strings

The laws of transverse vibrations of stretched strings are (i) the law of length (ii) law of tension and (iii) the law of mass. (i)......

### Describe on Sonometer

The sonometer consists of a hollow sounding box about a metre long. One end of a thin metallic wire of uniform cross-section is fixed to......

### Characteristics of Stationary Waves

Some Characteristics of stationary waves:  The waveform remains stationary. Nodes and antinodes are formed alternately. The points where displacement is zero are called nodes and......

### Define Stationary Waves

When two progressive waves of same amplitude and wavelength travelling along a straight line in opposite directions superimpose on each other, stationary waves are formed.......

### Define Standing Waves in Strings

In musical instruments like sitar, violin, etc. sound is produced due to the vibrations of the stretched strings. Here, we shall discuss the different modes......

### Uses of Beats

Uses of beats: (i) The phenomenon of beats is useful in tuning two vibrating bodies in unison. For example, a sonometer wire can be tuned......

### Define Beats

When two waves of nearly equal frequencies travelling in a medium along the same direction superimpose upon each other, beats are produced. The amptitude of......