In the given diagram, the frequency of waves is
Correct answer: D. Greatest in case III.
- A. Equal in all cases.
- B. Greatest in case I.
- C. Greatest in case II.
- D. Greatest in case III.
Explanation
Frequency is defined as the number of wave cycles that pass a given point per unit time. To determine which wave has the greatest frequency, examine the number of complete wave cycles that occur over the same interval for each case. The wave with the most cycles in this interval has the highest frequency.In case III, the wave completes more cycles than in cases I and II, indicating that it has the highest frequency. Therefore, option D is correct.Option A is incorrect because not all waves have the same frequency; they differ in the number of cycles they complete. Option B is incorrect because case I does not have the most cycles. Option C is incorrect because case II does not have the greatest frequency.
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About Progressive Waves
Progressive waves transfer energy through a medium or space while particles oscillate about their equilibrium positions. The work includes amplitude, wavelength, frequency, period, phase difference, wave speed and the progressive wave equation, while distinguishing travelling waves from stationary waves, where the pattern has fixed nodes and antinodes.
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