When a longitudinal wave moves through a certain medium, the quantity which is transmitted through the medium is

When a longitudinal wave moves through a certain medium, the quantity which is transmitted through the medium is Correct Answer energy only

The correct answer is option 2, i.e. energy only.

Concept:

A wave is a disturbance that propagates energy and momentum from one place to the other without the transport of matter.

• Examples of waves are - ripples on a pond, the sound we hear, visible light, radio, and TV signals.
• Among the different waves sound, light, and radio waves provide us with an effective means of transmitting and receiving energy and information.

Waves are of two types: Mechanical and Electromagnetic.

• Mechanical waves require a material medium for their propagation.
  • In the propagation of mechanical waves, the elasticity and density of the medium play an important role. This is the reason that mechanical waves are sometimes referred to as elastic waves.
  • Example: sound wave.

      There are different ways of classifying mechanical waves.

Explanation:

1. Based on the Direction of Motion of Particles
   1. Transverse Waves: The oscillatory motion of the particles of the medium, in such waves, is transverse to the direction of propagation.
   2. Longitudinal Waves: The direction of vibration of the particles of the medium, in these waves, is parallel to the direction of propagation.
      • Example: Sound waves in air.
      • The particles of the medium, simultaneously, vibrate up and down, and back and forth, but never get transmitted.
      • Hence option 1 is not correct.

• Electromagnetic waves do not require a material medium for their propagation. i.e. they can travel through a vacuum.
  • They propagate energy and momentum but do not transport matter.
  • Examples: Light, TV signals, radio waves, X-rays, and Microwave.
  • Energy travels in the form of electric and magnetic fields in an electromagnetic wave.