Waves Test - 46...

Which of these does not represent a wave equation

A travelling wave is represented by the equation $$y=20 sin 2(x-4t)$$. If y is measured in cms,  what is the amplitude of the wave

If the particle was to start at the extreme position i.e x = +A, then what will be the equation of SHM:

A particle executes SHM given by an equation $$x=A sin (\omega t + \pi/6)$$. Where was the particle at t = 0

The equation of a travelling wave is given by $$3sin(\pi/2)(25t-x)$$ where x and y are in meters and t is in seconds. What is the ratio of maximum amplitude to its wavelength

A mass M, attached to a horizontal spring, executes S.H.M. with amplitude $$A_1$$. When the mass M passes through its mean position then a smaller mass m is placed over it and both of them move together with amplitude $$A_2$$. The ratio of $$\left( \frac{A_1}{A_2}\right)$$ is:

A magnifier lens focusses a beam of light on a sheet of paper for 5 secs and the paper starts burning. The process described here is

Tapping gently on the surface of water produces concentric ripples. This is due to 

A plane wave of wavelength $$\lambda$$ is incident at an angle $$\theta$$ on a plane mirror. Maximum intensity will be observed at $$P$$, when

Two particles are executing simple harmonic motion of the same amplitude A and frequency $$\omega$$ along the x-axis. Their mean position is separated by distance $$X_0(X_0>A)$$. If the maximum separation between them is ($$ X_0+ A$$), the phase difference between their motion is: