A wave travelling on a string at a speed of 10 m/s causes each particle of the string to oscillate with a time period of 20 ms.(a) What is the wavelength of the wave?(b) lf the displacement of a particle is 1.5 mm at a certain instant, what will be the displacement of aparticle 10 cm away from it at the same instant?
karthik , 7 Years ago
Grade 12
2 Answers
Saurabh Koranglekar
Last Activity: 4 Years ago
Arun
Last Activity: 4 Years ago
Given, Wave speed (v) = 10 Time period (T) = a) Wavelength of the wave:
= 0.02 m = 20 cm (b) Displacement of the particle at a certain instant: y = 1.5 = Phase difference of the particle at a distance x = 10 cm:
The displacement is given by
= = 1.5 mm Hence, Displacement = 1.5 mm
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