A progressive wave is represented by \(y = 10\operatorname{Sin}\left(1000\pi t - \frac{\pi x}{34}\right)\). two layers of the wave separated by 153cm have a...

Assessment: JAMB UTME - Physics - 2009 Subject: Physics

Question 1 Report

A progressive wave is represented by \(y = 10\operatorname{Sin}\left(1000\pi t - \frac{\pi x}{34}\right)\). two layers of the wave separated by 153cm have a phase difference of

Answer Details
The given wave equation is y = 10 sin(1000?t - ?x/34). The general equation for a progressive wave is y = A sin(?t - ?x), where A is the amplitude, ? is the angular frequency, t is the time, x is the distance, and ? is the phase angle. Comparing this with the given equation, we get: A = 10 ? = 1000 ?x/34 = ?t The wavelength (?x) of the wave is given by: ?x = (2?/?) where ? is the wavelength and ? is the wave number. The phase difference between two points separated by a distance d is given by: ? = (2?/?)d where ? is the phase difference. Let's find the wavelength of the wave: ?x = (2?/?) = (2?/1000) = 0.00628 m The distance between the two layers of the wave is 153 cm = 1.53 m. So, the number of wavelengths between the two layers of the wave is: n = (1.53/0.00628) = 243.06 Since the two layers of the wave are separated by half a wavelength, the number of half-wavelengths is: n/2 = 121.53 Therefore, the phase difference between the two layers of the wave is: ? = (2?/?)d = (2?/243.06)(1.53) = 0.398 rad = 22.8 degrees Converting radians to degrees, we get: 22.8 × (180/? ) = 1307.6/? None of the given options match this answer. Therefore, there is no correct option.

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