Two tabla drums sound at $256$ Hz and $260$ Hz simultaneously. The beat frequency heard is:
A$516$ Hz, the sum of the two source frequencies
B$258$ Hz, the average pitch of the two drums
C$0$ Hz, since they superpose into one note silently
D$4$ Hz, the absolute difference of the frequencies
Answer & Solution
Correct answer: D. $4$ Hz, the absolute difference of the frequencies
Beat frequency $= |f_1 - f_2| = 4$ Hz.
Related questions
The positions of the nodes in a standing wave are:A stationary wave pattern results from superposing how many waves?In a standing wave, points of largest amplitude are called:In a standing wave, points of zero amplitude are called:A wave meeting its own reflection can form a wave that is:Under superposition, each pulse moves as if the others are:The rule that overlapping waves add is called the principle of:When two pulses overlap, the resultant displacement is the: