In a coiled spring, the particles of the medium vibrate to and fro about their mean positions at an angle of
A 0° to the direction of propagation of wave.
B 45° to the direction of propagation of wave.
C 60° to the direction of propagation of wave.
D 90° to the direction of propagation of wave.

In a coiled spring, the particles of the medium vibrate to and fro about their mean positions at an angle of

A. 0° to the direction of propagation of wave

Explanation:

The waveform of a coiled spring is a longitudinal wave, which is made up of vibrations of the spring which are in the same direction as the direction of the wave's advancement

As the coiled spring experiences a compression force and is then released, it experiences a sequential movement of the wave of the compression that extends the length of the coiled spring which is then followed by a stretched section of the coiled spring in a repeatedly such that the direction of vibration of particles of the coiled is parallel to direction of motion of the wave

From which we have that the angle between the direction of vibration of the particles of the coiled spring and the direction of propagation of the wave is 0°.

answer

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explanation:

heat the gas and measure the pressure