A table is revolving on its axis at 5 revolutions per second. A sound source of frequency 1000 Hz is fixed on the table at 70 cm from the axis. The…

Question

A table is revolving on its axis at 5 revolutions per second. A sound source of frequency 1000 Hz is fixed on the table at 70 cm from the axis. The minimum frequency heard by a listener standing at a distance from the table will be (speed of sound = 352 m s^(-1))

MARKS Content Team · Accepted Answer

Correct answer: (C) 941 Hz. v_s=rω=r×2πv =70/100×2×22/7×5=22 m s^(-1) Frequency is minimum when the source is moving away from the listener. ν^(′)=(u×ν)/(u+v_s)=(352×1000)/(352+22)=941 Hz

A table is revolving on its axis at $5$ revolutions per second. A sound source of frequency $1000 Hz$ is fixed on the table at $70 cm$ from the axis. The minimum frequency heard by a listener standing at a distance from the table will be (speed of sound = $352 m s^{- 1}$ )

Solution

More Waves and Sound Questions

A table is revolving on its axis at 5 revolutions per second. A sound source of frequency 1000 Hz is fixed on the table at 70 cm from the axis. The minimum frequency heard by a listener standing at a distance from the table will be (speed of sound = 352 m s-1)

Solution

More Waves and Sound Questions

A table is revolving on its axis at $5$ revolutions per second. A sound source of frequency $1000 Hz$ is fixed on the table at $70 cm$ from the axis. The minimum frequency heard by a listener standing at a distance from the table will be (speed of sound = $352 m s^{- 1}$ )