MCQ
When a stationary wave is formed then its frequency is
  • Same as that of the individual waves
  • B
    Twice that of the individual waves
  • C
    Half that of the individual waves
  • D
    None of the above

Answer

Correct option: A.
Same as that of the individual waves
(a) If $y_{\text {incident }}=a \sin (\omega t-k x)$ and $y_{\text {stationary }}=a \sin (\omega t) \cos k x$ then it is clear that frequency of both is same $(\omega)$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

The dipole moment of a short bar magnet is $1.25 \mathrm{~A}-\mathrm{m}$. The magnetic field on its axis at a distance of $0.5$ metre from the centre of the magnet is
An ideal gas expands in such a manner that its pressure and volume can be related by equation $P V^2=$ constant. During this process, the gas is
$P-V$ plots for two gases during adiabatic process are shown in the figure. Plots 1 and 2 should correspond respectively to
Image
The field of view is maximum for
What is the modulation index of an over modulated wave
A body [Pb.PET 2004$]$ rest with a constant acceleration of $5 m / s ^2$. Its instantaneous speed (in $m / s$ ) at the end of $10 sec$ is
A body is thrown vertically upwards with velocity $u$. The distance travelled by it in the fifth and the sixth seconds are equal. The velocity $u$ is given by $(g=9.8 m / s )$
A galvanometer $G$ deflects full scale when a potential difference of $0.50 $ $V$ is applied. The internal resistance of the galvanometer $r_g$ is $25$ $ohms$. An ammeter is constructed by incorporating the galvanometer and an additional resistance $R_S$. The ammeter deflects full scale when a measurement of $2.0$ $A$ is made. The resistance $R_S$ is closest to : ................. $\Omega$
An ammeter gives full deflection when a current of 2 amp. flows through it. The resistance $E$ of ammeter is 12 ohms. If the same ammeter is to be used for measuring a maximum current of 5 amp. then the ammeter must be connected with a resistance of
The intensity of sound wave while passing through an elastic medium falls down by $10 \%$ as it covers one metre distance through the medium. If the initial intensity of the sound wave was $100$ decibels, its value after it has passed through $3$ metre thickness of the medium will be