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Asked in PMC Practice Test 32 (2021) 2021

Wavelength of a travelling wave is 20 cm. What is the phase angle between the two points separated through a distance of 25cm?

Correct answer: B. 2.5π

  • A. 2π
  • B. 2.5π
  • C. 3π
  • D. 1π

Explanation

Correct Option: BThe formula we know thatΔΦ=2π X distance /λΔΦ= 2π x 25cm/20cmΔΦ = 2π x 1.25ΔΦ = 2.5πThus this is the correct option.

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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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