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When a wave travels from the one medium to another, the quality which will not change is its
A. Amplitude
B. Velocity
C. Frequency
D. Intensity

Last updated date: 23rd Feb 2024
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IVSAT 2024
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Hint: A wave is a propagating mechanical disruption of one or more quantities in physics, mathematics, and related fields, often represented by a wave equation.At least two field concentrations in the wave medium are present in physical waves.

Complete answer:
Sound can travel as longitudinal waves through air, water, and solids, as well as as a transverse wave in solids (see Longitudinal and transverse waves, below). A sound source, such as the vibrating diaphragm of a stereo speaker, produces the sound waves. The sound source causes waves in the medium around it.

The waves travel away from the source at the speed of sound, creating the sound wave, while the source begins to vibrate the medium. The strength of waves does not change when they pass from one medium to another. Waves slow down as they pass through a denser medium, and their wavelength shortens.

The wave turns as a portion of it flows quicker over a longer period of time. Although the wave is slower, the wavelength is shorter, so the frequency stays constant. When sound moves from one medium to another, its speed will change. However, since it is similar to a guided oscillation and has the frequency of the original source, the frequency normally remains constant.

Hence option C is the correct answer.

Note: Longitudinal waves, also known as compression waves, are used to convey sound through gases, plasma, and liquids. To spread, it needs a medium. It will, however, be transmitted as both longitudinal and transverse waves across solids. Longitudinal sound waves are waves with alternating pressure differences from equilibrium, creating local compression and rarefaction, while transverse waves (in solids) are waves with alternating shear stress at right angles to the propagation direction.
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