Waves Test - 26...

An oscilloscope is basically designed to convert .................... .

In a stationary wave,

Consider a function $$y = 10 \sin^{2} (100\pi t + 5 \pi z)$$ where $$y, z$$ are in $$cm$$ and $$t$$ is $$second. $$

A string 1m long is drawn by a 300Hz vibrator attached to its end. The string vibrates in 3 segments. The speed of transverse waves in the string is equal to 

 769Hz longitudinal wave in air has a speed of 344m/s. At a particular instant, what is the phase difference (in degrees) between two points 5.0 cm apart?

A sound wave travels with a speed of $$330 ms^{-1}$$ in air. If the wavelength of the wave is 3.3m, then the frequency of the wave is ______.

A composition string is made up by joining two strings of different masses per unit length $$\longrightarrow \mu $$ and $$4\mu.$$ The composite string is under the same tension. A transverse wave pulse : $$Y=(6 mm) \sin (5t+40x)$$, where '$$t$$' is in seconds and '$$x$$' in meters, is sent along the lighter string towards the joint. The joint is at $$x=0.$$ The equation of the wave pulse reflected from the joint is 

A pulse shown in the figure is reflected from the rigid wall A and then from free end B. The shape of the string after these 2 reflection will be :

A particle is executing SHM of amplitude $$A$$ about the mean position $$x=0$$. Which of the following cannot be a possible phase difference between the positions of the particle at $$x=+{A}/{2}$$ and $$x=-{A}/{\sqrt{2}}$$.

An ultrasonic source emits sound of frequency 220 kHz in air. If this sound meets a water surface, what is the wavelength of the transmitted sound? (At the atmospheric temperature, speed of sound in air $$=352  m  s^{-1}   and   in   water  = 1.496  m  s^{-1}$$)