A car moving at 20m/s with its horn blowing (f = 1200Hz) is chasing another car going at 15m/s. What is the apparent frequency of the horn as heard by the driver being chased?
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Correct Answer: Option A
Explanation:
f\(_1\)
=
f(v - v\(_o\))
v - v\(_s\)
=
1200(340 - 15)
340 - 20
=
1.22KHz
f\(_1\)
=
f(v - v\(_o\))
v - v\(_s\)
=
1200(340 - 15)
340 - 20
=
1.22KHz