Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > The displacement of the medium in a sound wave is given by the equation y 1 ​ =Acos(ax+bt) where A,a & b are positive constants. The wave is reflected by an obstacle situated at x=0. The intensity of the reflected wave is 0.64 times that if the incident wave. (a) What are the wavelength and frequency of the incident wave ? (b) Write the equation for the reflected wave. (c) In the resultant wave formed after reflection, find the minimum value of the particle speed in the medium?

The displacement of the medium in a sound wave is given by the equation y 1 ​ =Acos(ax+bt) where A,a & b are positive constants. The wave is reflected by an obstacle situated at x=0. The intensity of the reflected wave is 0.64 times that if the incident wave. (a) What are the wavelength and frequency of the incident wave ? (b) Write the equation for the reflected wave. (c) In the resultant wave formed after reflection, find the minimum value of the particle speed in the medium?

The displacement of the medium in a sound wave is given by the equation y 1 ​ =Acos(ax+bt) where A The figure shows a snap photograph of a vibrating string at `t = 0`. The particle `P` is observed moving up with velocity `20sqrt(3) cm//s`. The tangent at `P` makes an angle `60^(@)` with x-axis.