alleryTwo sound waves have frequencies of 250 Hz and 280 Hz. What beat frequency do they produce when superimposed?
A290 Hz
B265 Hz
C60 Hz
D30 Hz
Answer & Solution
Correct answer: D. 30 Hz
1. Identify the knowns: f1 = 250 Hz and f2 = 280 Hz.
2. Use f_B = |f1 - f2|.
3. Substitute: f_B = |250 Hz - 280 Hz| = 30 Hz, matching option D.
4. Option A, 290 Hz, instead adds the two frequencies together rather than subtracting them.
_Source: OpenStax Physics (CC BY 4.0), Ch 14 "Sound", section Resonance and Beats_
Keep practising Force, Pressure & Fluids
Browse all Force, Pressure & Fluids questions for ICSE Class 10, or explore more Physics topics.
Related questions
Two waves with frequencies f1 and f2 are superimposed. What formula gives the beat frequenDogs can hear frequencies up to 45 kHz. What is the wavelength of a 45,000 Hz sound wave tA bat produces a sound with a frequency of 17,250 Hz and a wavelength of 0.019 m. What is Through which state of matter does sound travel fastest?A closed-pipe resonator has a length of 0.672 m, and the speed of sound is 344 m/s. What iA piano tuner compares a piano string with a 256 Hz tuning fork and hears 2 beats per secoWhat sound intensity level, in decibels, corresponds to the reference intensity I0 = 10^-1An 87.0 dB sound has an intensity five times as great as an 80 dB sound. What difference i