Beats are produced when two progressive waves of frequency $256{\rm{ }}\,Hz{\rm{ }}and{\rm{ }}260{\rm{ }}\,Hz$ superpose. Then the resultant amplitude changes periodically with frequency of

$\begin{array}{*{20}{l}} {4{\rm{ }}\,Hz} \end{array}$

$\begin{array}{*{20}{l}} {256{\rm{ }}\,Hz} \end{array}$

$\begin{array}{*{20}{l}} {260{\rm{ }}\,Hz} \end{array}$

JEE PHYSICS MCQ: WAVES

1 Medium

1 of 1

Understanding +4 | -1

Beats are produced when two progressive waves of frequency

256\mathrm{ }\,Hz\mathrm{ }and\mathrm{ }260\mathrm{ }\,Hz

superpose. Then the resultant amplitude changes periodically with frequency of

View answer and explanation

Correct option: D

\begin{array}{llllllllllllllllllll} {4\mathrm{ }\,Hz} \end{array}

Option D is correct because the beat frequency is the absolute difference between the two frequencies, which is 260 Hz - 256 Hz = 4 Hz.

Practice All Chapter MCQs →

3\,\,kHz

0.5

f\mathrm{ }Hz

V\mathrm{ }m/sec

0.2\,\,V

y = \frac{3}{{{{\left( {2x + 3t} \right)}^2} + 4}},

(– \mathrm{ve}) \,x

y = f(kx +\omega t),

X

0.01\,\,s

5 \mathrm{~m}

245 \mathrm{~g}

1 \mathrm{~kg}

g=980 \mathrm{~cm} \mathrm{~s}^{-2}

T

V