Question

Two sources of sound A and B are of
frequencies 120 Hz and 256 Hz
respectively. Which sound is of higher
pitch ? To a listener, how do the two
sounds differ ?​

Answer 1

Explanation:

Given,

Frequency f

1

& f

2

= 260 Hz & 256 Hz

Phase difference for two consecutive beats is π.

Beat frequency f

b

=∣f

1

−f

2

∣=260−256=4Hz, four beat per second.

Frequency of temporal interference is f=

2

∣f

1

−f

2

∣

=2Hz

Phase difference δ(t=

16

1

sec), δ=2πf×t=2π×2×

16

1

=

4

π

Answer 2

Answer:

given ,

frequency a =120 hz

frequency B =256hz

Explanation:

thus , the sound B is of higher pitch than a

to a listener , the sound a Will br grave while the sound B will shrill

this is the final ans and it is correct

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