Crest and trough are formed in which waves:
Correct answer: C. Transverse waves
- A. Electromagnetic waves
- B. Longitudinal waves
- C. Transverse waves
- D. All of these
Explanation
When the particles of the medium vibrate perpendicular to the direction of propagation of the wave, the wave is called a transverse wave.The transverse wave is composed of crests and troughs. The crest is the part of the wave where displacement is maximum whereas trough is the lowest point in a cycle.Longitudinal waves are the type of waves in which the particles vibrate parallel to the direction of propagation of waves. It is composed of compressions and rarefactions.Waves created as a result of vibration in the electromagnetic fields are called electromagnetic waves. They are transverse in nature.
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About Waves
Progressive waves transfer energy through oscillations, with wavelength, frequency, amplitude and wave speed related by v = fλ; sound speed depends on the medium. Superposition produces interference and stationary waves in strings and organ pipes, while simple harmonic motion describes the oscillation itself and must be distinguished from wave propagation.
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