The mechanical waves are not generated by:
Correct answer: A. Electric and magnetic fields
- A. Electric and magnetic fields
- B. Coil of springs
- C. Ropes
- D. Water
Explanation
Mechanical waves are not generated by electric and magnetic fields. Mechanical waves, such as sound waves, require a physical medium to propagate. They are not directly generated by electric and magnetic fields.
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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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