JEE-ADVANCED SERIES Physics
Doppler Effect
3 previous year questions.
Volume: 3 Ques
Yield: Medium
High-Yield Trend
1
2024 1
2023 1
2016 Chapter Questions 3 MCQs
01
PYQ 2016
medium
physics ID: jee-adva
Two loudspeakers and are located apart and emit sound at frequencies and , respectively. A car is initially at a point away from the midpoint of the line and moves towards constantly at along the perpendicular bisector of . It crosses and eventually reaches a point away from . Let represent the beat frequency measured by a person sitting in the car at time . Let and be the beat frequencies measured at location and , respectively. The speed of sound in air is Which of the following statement(s) is(are) true regarding the sound heard by the person?
1
2
The rate of change in beat frequency is maximum when the car passes through Q
3
4
02
PYQ 2023
easy
physics ID: jee-adva
S1 & S2 are sources of the sound of frequency 656 Hz. S1 is moving along OP and S2 is moving on the circle in an anticlockwise direction with a constant speed of 4√2 m\s. P is a detector that is fixed. Select the correct options (Vsound=300m\s)
1
When S2 is at Q, Then frequency it detected by the detector is approximately 647 Hz.
2
When S2 is at Q, Then frequency it detected by the detector is 327 Hz.
3
When S2 is at R and S1 is coming toward P with a velocity of 4m/s, Then the beat frequency it detected by the detector is 8.86 Hz.
4
When S2 is at R and S1 is coming toward P with a velocity of 4m/s, Then the beat frequency it detected by the detector is 2.56 Hz.
03
PYQ 2024
medium
physics ID: jee-adva
A source (S) of sound has frequency . When the observer (O) and the source move towards each other at a speed with respect to the ground (as shown in Case 1 in the figure), the observer measures the frequency of the sound to be . However, when the observer and the source move away from each other at the same speed v with respect to the ground (as shown in Case 2 in the figure), the observer measures the frequency of sound to be Hz. The value of is _____.
