Waves Test - 44...

Two wires made of the same material, one thick and other thin, are connected to form a composite wire. The composite wire is subjected to some tension. A wave travelling along the wire crosses the junction point. The characteristic that undergoes a change at the junction point is:

Spherical wavefronts, emanating from a point source, Strike a plane reflecting surface. What will happen to these wave fronts, immediately after reflection ?

Which of the following wave function does represent a travelling wave?

A vibratory motion is represented by
$$ x = 2A cos \omega t + A cos [\omega t + \frac{\pi}{2}] + A cos (\omega t + \pi) + \frac{A}{2} cos [\omega t + \frac{3 \pi}{2}]$$.
The resultant amplitude of the motion is

A particle executes SHM of period $$12$$s. After two seconds, it passes through the centre of oscillation, the velocity is found to be $$3.142 cm s^{-1}$$. The amplitude of oscillation is:

The function $$ sin \omega t - cos \omega t$$ represents

there are $$26$$ tuning forks arranged in the decreasing order of their frequencies. Each tuning fork gives $$3$$ beats with the next. The first one is octave of the last. What is the frequency of $$18^{th}$$ tuning fork?

In a certain oscillatory system, the amplitude of motion is $$5$$m and the time period is $$4$$s. The time taken by the particle for passing between points which are at distance of $$4$$m and $$2$$m from the centre and on the same side of it will be

The equation of a wave is given by
$$y= 10$$ sin$$\left(\dfrac{2\pi}{45} t + \alpha \right)$$.
If the displacement is $$5 cm$$ at $$t=0$$, the the total phase at $$t=7.5 s$$ is

The displacement of a particle executing simple harmonic motion is given by
$$x = 3 sin [2 \pi t + \frac{\pi}{4}]$$ where x is in metres and t is in seconds. The amplitude and maximum speed of the particle is: