Question

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

Answer 1

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

Complete answer:
Sound is a mechanical wave produced by a vibrating entity. The vibrations of the entity cause items in the surrounding medium to vibrate, moving energy via the medium. For a sound wave that travels through air, the vibration of the particles is defined as longitudinal.

Longitudinal waves are those in which the acceleration of each particle in the medium is parallel to the energy transfer. A longitudinal wave is created in a slinky position when the slinky is split horizontally and the initial slinky bands are vibrated horizontally. Sound propagates in the form of longitudinal waves. The speed and longitude of sound can alter as it travels from medium to medium.

The wavelength is directly proportional to the sound speed. If the sound velocity doubles, the wavelength doubles as well, regardless of whether the sound travels from medium to medium. The frequency of sound is determined by the sound source rather than the transmission medium. As a result, it isn't changing. As a result, the right answer is B, which states that frequency does not change while moving from one medium to another.

Hence, the correct answer is option B.

Note:A sound is a vibration that propagates through a medium in the form of a mechanical wave. The medium in which it propagates can either be a solid, a liquid or a gas.Sound travels fastest in solids, relatively slower in liquids and slowest in gases.