The phase angle between two points is 3 pi. The distance between these points is 15 cm. What is the wavelength of the wave?
Correct answer: D. 10cm
- A. 10.5cm
- B. 3cm
- C. 13cm
- D. 10cm
Explanation
We know, wavelength is the minimum separation between two successive crests or troughs of a wave.relation between phase difference, path difference and wavelength is given by, ΔФ = 2π/λ Δx where, ΔΦ is the phase difference (phase angle between two points)Δx is path difference ( distance between two points on wave)and λ is wavelength of the wave. here, ΔΦ = 3π , Δx = 15 cm ⇒ 3π = 2π/λ × 15 cm ⇒ λ = 10 cmAs this is a numerical so only one option is correct
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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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