Phase Constant

Consider the wave y = (10 mm) sin[(5picm^(-1))x-(60pis^(-1))t + (pi)/(4)] . Find (a) the amplitude (b) the wave number (c) the wavelength (d) the frequency f the time period and (f) the wave velcity (g) phase constant of SHM of particle at x = 0 .

Two waves travel down the same string . These waves have the same velocity , frequency f and wavelength but having different phase constants phi_(1) and phi_(2) (lt phi_(1)) and amplitudes A_(1) and A_(2) ( lt A_(1)) . Mark the correct statement(s) for the resultant wave which is produced due to superposition of these two waves.

A 10g particle undergoes SHM with an amplitude of 2.0mm, a maximum acceleration of magnitude 6.5 xx 10^(3) m//s^(2) , and an unknown phase constant phi . What are (a) the period of the motion, (b) the maximum speed of the particle, and (c ) the total mechanical energy of the oscillator? What is the magnitude of the force on the particle when the particle is at (d) its maximum displacement and (e ) half its maximum displacement?

Statement-1 : Beats cannot be produced by light sources. Statement-2: Light sources have constant phase difference

Assertion : Beats can also be observed by two light sourcesas in sound. Reason : Light sources have constant phase deference.

Assertion:Phase transition involves change in internal energy only. Reason:Phase transition occurs at constant pressure.