A wave passes through a medium; each particle of the medium performs 100 complete vibrations in 5 seconds. What is the frequency of the wave?
Correct answer: B. 20 Hz
- A. 2 Hz
- B. 20 Hz
- C. 4 Hz
- D. 40 Hz
Explanation
Vibrations = 100Time = 5 sFrequency = vibrations/time= 100/5= 20 HzHence, option B is the correct
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About Simple Harmonic Motion
Simple harmonic motion is oscillation in which acceleration is directly proportional to displacement and directed toward the equilibrium position. Work includes displacement, velocity, acceleration, phase, period, frequency, amplitude and energy, with applications to springs and simple pendulums. The restoring force and the conditions for SHM distinguish it from general periodic motion.
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