Question

With the propogation of a longitudinal wave through a material medium, the quantities transmitted in the propogation direction are

• A. energy, momentum and mass
• B. energy
• C. energy and mass
• D. energy and linear momentum

Answer 1

The Correct Option is D

To understand the propagation of a longitudinal wave through a material medium, we need to consider what physical quantities are carried along with the wave. Longitudinal waves, like sound waves, involve oscillations of particles in the same direction as the wave travels.

Here's a step-by-step explanation of the quantities transmitted by a longitudinal wave:

1. Nature of Longitudinal Waves: Longitudinal waves involve compressions and rarefactions, where the particles of the medium oscillate parallel to the direction of wave travel.
2. Energy Transmission: Waves, in general, carry energy without the actual movement of the particles from one place to another. Longitudinal waves, specifically sound waves in air, transmit energy as they move through the medium, as is evident when we hear sound.
3. Momentum Transmission: As particles of the medium oscillate back and forth, they impart momentum to their neighboring particles. Thus, linear momentum is transmitted with the wave.
4. Mass Transmission: Mass is generally not transmitted across the medium in wave propagation. Each particle returns to its original position after the passage of the wave.

Based on these explanations, we can conclude:

• The transmitted quantities in the direction of wave propagation are energy and linear momentum.

Correct Answer: energy and linear momentum.