Doppler Effect
PHXI15:WAVES

354728 A source \(S\) and an observer \(O\), moving with speeds \(v_{1}\) and \(v_{2}\) respectively, are moving away from each other. When they are separated by distance \(a(t=0)\), a pulse is emitted by the source. This pulse is received by \(O\) at time \({{\text{t}}_1}\) then \(t_{1}\), is equal to (velocity of sound is \(v_{s}\) )

1 \(\dfrac{a}{v_{1}+v_{s}}\)
2 \(\dfrac{a}{v_{s}+v_{2}}\)
3 \(\dfrac{a}{v_{1}+v_{2}+v_{s}}\)
4 \(\dfrac{a}{v_{s}-v_{2}}\)
PHXI15:WAVES

354729 A person observes two moving trains, ' \(A\) ' reaching the station and ' \(B\) ' leaving the station with equal speed of \(30\;m/s\). If both trains emit sounds with frequency \(300\;Hz\), (Speed of sound: \(330\;m/s\)) approximate difference of frequencies heard by the person will be:

1 \(80\;Hz\)
2 \(10\;Hz\)
3 \(33\,Hz\)
4 \(55\;Hz\)
PHXI15:WAVES

354730 In the given arrangement a source is placed at the fixed end of the spring with spring constant \(100\;N/m\) and the receiver is attached to the moving end of the spring, which is connected to a box of mass \(4\;kg\), which is oscillating horizontally with an amplitude of oscillation \(2\;m\). If the source emits a frequency of \(990\;Hz\) then (speed of sound \( = 330\;m/s\))
supporting img

1 Maximum frequency received by the receiver is \(990\;Hz\)
2 Minimum frequency received by the receiver is \(990\;Hz\)
3 Frequency band width received by the receiver is \(960\;Hz - 1020\;Hz\)
4 Maximum and minimum frequencies are received at the extreme positions
PHXI15:WAVES

354731 Doppler shift in frequency does not depend upon

1 The frequency of wave produced
2 The speed of the source
3 Distance between source and observer
4 The speed of the observer
PHXI15:WAVES

354728 A source \(S\) and an observer \(O\), moving with speeds \(v_{1}\) and \(v_{2}\) respectively, are moving away from each other. When they are separated by distance \(a(t=0)\), a pulse is emitted by the source. This pulse is received by \(O\) at time \({{\text{t}}_1}\) then \(t_{1}\), is equal to (velocity of sound is \(v_{s}\) )

1 \(\dfrac{a}{v_{1}+v_{s}}\)
2 \(\dfrac{a}{v_{s}+v_{2}}\)
3 \(\dfrac{a}{v_{1}+v_{2}+v_{s}}\)
4 \(\dfrac{a}{v_{s}-v_{2}}\)
PHXI15:WAVES

354729 A person observes two moving trains, ' \(A\) ' reaching the station and ' \(B\) ' leaving the station with equal speed of \(30\;m/s\). If both trains emit sounds with frequency \(300\;Hz\), (Speed of sound: \(330\;m/s\)) approximate difference of frequencies heard by the person will be:

1 \(80\;Hz\)
2 \(10\;Hz\)
3 \(33\,Hz\)
4 \(55\;Hz\)
PHXI15:WAVES

354730 In the given arrangement a source is placed at the fixed end of the spring with spring constant \(100\;N/m\) and the receiver is attached to the moving end of the spring, which is connected to a box of mass \(4\;kg\), which is oscillating horizontally with an amplitude of oscillation \(2\;m\). If the source emits a frequency of \(990\;Hz\) then (speed of sound \( = 330\;m/s\))
supporting img

1 Maximum frequency received by the receiver is \(990\;Hz\)
2 Minimum frequency received by the receiver is \(990\;Hz\)
3 Frequency band width received by the receiver is \(960\;Hz - 1020\;Hz\)
4 Maximum and minimum frequencies are received at the extreme positions
PHXI15:WAVES

354731 Doppler shift in frequency does not depend upon

1 The frequency of wave produced
2 The speed of the source
3 Distance between source and observer
4 The speed of the observer
PHXI15:WAVES

354728 A source \(S\) and an observer \(O\), moving with speeds \(v_{1}\) and \(v_{2}\) respectively, are moving away from each other. When they are separated by distance \(a(t=0)\), a pulse is emitted by the source. This pulse is received by \(O\) at time \({{\text{t}}_1}\) then \(t_{1}\), is equal to (velocity of sound is \(v_{s}\) )

1 \(\dfrac{a}{v_{1}+v_{s}}\)
2 \(\dfrac{a}{v_{s}+v_{2}}\)
3 \(\dfrac{a}{v_{1}+v_{2}+v_{s}}\)
4 \(\dfrac{a}{v_{s}-v_{2}}\)
PHXI15:WAVES

354729 A person observes two moving trains, ' \(A\) ' reaching the station and ' \(B\) ' leaving the station with equal speed of \(30\;m/s\). If both trains emit sounds with frequency \(300\;Hz\), (Speed of sound: \(330\;m/s\)) approximate difference of frequencies heard by the person will be:

1 \(80\;Hz\)
2 \(10\;Hz\)
3 \(33\,Hz\)
4 \(55\;Hz\)
PHXI15:WAVES

354730 In the given arrangement a source is placed at the fixed end of the spring with spring constant \(100\;N/m\) and the receiver is attached to the moving end of the spring, which is connected to a box of mass \(4\;kg\), which is oscillating horizontally with an amplitude of oscillation \(2\;m\). If the source emits a frequency of \(990\;Hz\) then (speed of sound \( = 330\;m/s\))
supporting img

1 Maximum frequency received by the receiver is \(990\;Hz\)
2 Minimum frequency received by the receiver is \(990\;Hz\)
3 Frequency band width received by the receiver is \(960\;Hz - 1020\;Hz\)
4 Maximum and minimum frequencies are received at the extreme positions
PHXI15:WAVES

354731 Doppler shift in frequency does not depend upon

1 The frequency of wave produced
2 The speed of the source
3 Distance between source and observer
4 The speed of the observer
PHXI15:WAVES

354728 A source \(S\) and an observer \(O\), moving with speeds \(v_{1}\) and \(v_{2}\) respectively, are moving away from each other. When they are separated by distance \(a(t=0)\), a pulse is emitted by the source. This pulse is received by \(O\) at time \({{\text{t}}_1}\) then \(t_{1}\), is equal to (velocity of sound is \(v_{s}\) )

1 \(\dfrac{a}{v_{1}+v_{s}}\)
2 \(\dfrac{a}{v_{s}+v_{2}}\)
3 \(\dfrac{a}{v_{1}+v_{2}+v_{s}}\)
4 \(\dfrac{a}{v_{s}-v_{2}}\)
PHXI15:WAVES

354729 A person observes two moving trains, ' \(A\) ' reaching the station and ' \(B\) ' leaving the station with equal speed of \(30\;m/s\). If both trains emit sounds with frequency \(300\;Hz\), (Speed of sound: \(330\;m/s\)) approximate difference of frequencies heard by the person will be:

1 \(80\;Hz\)
2 \(10\;Hz\)
3 \(33\,Hz\)
4 \(55\;Hz\)
PHXI15:WAVES

354730 In the given arrangement a source is placed at the fixed end of the spring with spring constant \(100\;N/m\) and the receiver is attached to the moving end of the spring, which is connected to a box of mass \(4\;kg\), which is oscillating horizontally with an amplitude of oscillation \(2\;m\). If the source emits a frequency of \(990\;Hz\) then (speed of sound \( = 330\;m/s\))
supporting img

1 Maximum frequency received by the receiver is \(990\;Hz\)
2 Minimum frequency received by the receiver is \(990\;Hz\)
3 Frequency band width received by the receiver is \(960\;Hz - 1020\;Hz\)
4 Maximum and minimum frequencies are received at the extreme positions
PHXI15:WAVES

354731 Doppler shift in frequency does not depend upon

1 The frequency of wave produced
2 The speed of the source
3 Distance between source and observer
4 The speed of the observer