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Which of the following statements is correct? |
If the constituents of the medium oscillate perpendicular to the direction of wave propagation, we call the wave a longitudinal wave. If the constituents of the medium oscillate along the direction of wave propagation, we call the wave a transverse wave. Frequency of a wave is the number of oscillations of each constituent particle in the vibrating medium per minute. The minimum distance between two points in a wave having the same phase at a particular instant of time is called the wave length. |
The minimum distance between two points in a wave having the same phase at a particular instant of time is called the wave length. |
The correct answer is option 4. The minimum distance between two points in a wave having the same phase at a particular instant of time is called the wave length. Out of the choices you provided, the correct statement is the minimum distance between two points in a wave having the same phase at a particular instant of time is called the wave length. Transverse vs. Longitudinal Waves: In a transverse wave, the particles of the medium vibrate perpendicular to the direction of wave propagation. (Think of shaking a jump rope up and down as it travels forward.) In a longitudinal wave, the particles vibrate parallel to the direction of wave propagation. (Imagine pushing and pulling on a slinky to create a wave motion.) Frequency vs. Wavelength: Frequency refers to the number of wave cycles that pass a point in a given amount of time (usually measured in Hertz or cycles per second). It's not directly related to the movement of individual particles. Wavelength is the minimum distance between two consecutive points in a wave that are in the same phase (crest, trough, etc.). So, the statement about wavelength accurately describes a key property of waves. |
