354758 Statement A :
When a source of sound passes us, the pitch we hear goes from high to low.
Statement B :
According to Doppler's effect, there is apparent change in the frequency of sound observed due to relative motion between the oberver and the source of sound.

354759 Two cars \(A\) and \(B\) approach a stationary observer from opposite sides as shown in fig. Observer hears no beats. If the frequency of the horn of the car \(B\) is \(504\;Hz\), the frequency of horn of car A will be:

354760 A source of sound of frequency \(450{\text{ cycle}}/sec\) is moving towards a stationary observer with \({34 {~m} / {s}}\) speed. If the speed of sound is \({340 {~m} / {s}}\) then the apparent frequency will be

354761 \(A\) and \(B\) are two sources generating sound waves. \(A\) listener is situated at \(C\). The frequency of the source at \(A\) is \(500\;Hz\). A, now, move towards \(C\) with a speed \(4\;m/s.\) the number of beats heard at \(C\) is 6 . When \(A\) moves a way from \(C\) with speed \(4\;m/s\), the number of beats heard at \(C\) is 18 . The speed of sound is \(340\;m/s\). The frequency of the source at \(B\) is:

354758 Statement A :
When a source of sound passes us, the pitch we hear goes from high to low.
Statement B :
According to Doppler's effect, there is apparent change in the frequency of sound observed due to relative motion between the oberver and the source of sound.

354759 Two cars \(A\) and \(B\) approach a stationary observer from opposite sides as shown in fig. Observer hears no beats. If the frequency of the horn of the car \(B\) is \(504\;Hz\), the frequency of horn of car A will be:

354760 A source of sound of frequency \(450{\text{ cycle}}/sec\) is moving towards a stationary observer with \({34 {~m} / {s}}\) speed. If the speed of sound is \({340 {~m} / {s}}\) then the apparent frequency will be

354761 \(A\) and \(B\) are two sources generating sound waves. \(A\) listener is situated at \(C\). The frequency of the source at \(A\) is \(500\;Hz\). A, now, move towards \(C\) with a speed \(4\;m/s.\) the number of beats heard at \(C\) is 6 . When \(A\) moves a way from \(C\) with speed \(4\;m/s\), the number of beats heard at \(C\) is 18 . The speed of sound is \(340\;m/s\). The frequency of the source at \(B\) is:

354758 Statement A :
When a source of sound passes us, the pitch we hear goes from high to low.
Statement B :
According to Doppler's effect, there is apparent change in the frequency of sound observed due to relative motion between the oberver and the source of sound.

354759 Two cars \(A\) and \(B\) approach a stationary observer from opposite sides as shown in fig. Observer hears no beats. If the frequency of the horn of the car \(B\) is \(504\;Hz\), the frequency of horn of car A will be:

354760 A source of sound of frequency \(450{\text{ cycle}}/sec\) is moving towards a stationary observer with \({34 {~m} / {s}}\) speed. If the speed of sound is \({340 {~m} / {s}}\) then the apparent frequency will be

354761 \(A\) and \(B\) are two sources generating sound waves. \(A\) listener is situated at \(C\). The frequency of the source at \(A\) is \(500\;Hz\). A, now, move towards \(C\) with a speed \(4\;m/s.\) the number of beats heard at \(C\) is 6 . When \(A\) moves a way from \(C\) with speed \(4\;m/s\), the number of beats heard at \(C\) is 18 . The speed of sound is \(340\;m/s\). The frequency of the source at \(B\) is:

354758 Statement A :
When a source of sound passes us, the pitch we hear goes from high to low.
Statement B :
According to Doppler's effect, there is apparent change in the frequency of sound observed due to relative motion between the oberver and the source of sound.

354759 Two cars \(A\) and \(B\) approach a stationary observer from opposite sides as shown in fig. Observer hears no beats. If the frequency of the horn of the car \(B\) is \(504\;Hz\), the frequency of horn of car A will be:

354760 A source of sound of frequency \(450{\text{ cycle}}/sec\) is moving towards a stationary observer with \({34 {~m} / {s}}\) speed. If the speed of sound is \({340 {~m} / {s}}\) then the apparent frequency will be

354761 \(A\) and \(B\) are two sources generating sound waves. \(A\) listener is situated at \(C\). The frequency of the source at \(A\) is \(500\;Hz\). A, now, move towards \(C\) with a speed \(4\;m/s.\) the number of beats heard at \(C\) is 6 . When \(A\) moves a way from \(C\) with speed \(4\;m/s\), the number of beats heard at \(C\) is 18 . The speed of sound is \(340\;m/s\). The frequency of the source at \(B\) is: