Login
Login
Register
Questions
Unanswered
Tags
Categories
Ask a Question
Ask a Question
Recent questions tagged doppler effect
+2
votes
1
answer
A source of sound, emitting frequency of 300 Hz, moving towards a stationary reflecting wall with speed 50 m/sec.
asked
Mar 30, 2019
in
JEE
by
kratos
waves
jee
sound waves
jee mains
doppler effect
+1
vote
1
answer
A train approaching a hill at a speed of 40 km/h sounds a whistle of frequency 580 Hz when it is at a distance of 1 km
asked
Mar 6, 2019
in
JEE
by
kratos
class-11
jee mains
jee
doppler effect
sound waves
waves
+1
vote
1
answer
A band playing music at a frequency is moving towards a wall at a speed vb . A motorist is
asked
Mar 3, 2019
in
JEE
by
kratos
gravitation
jee
sound waves
simple harmonic motion
jee mains
doppler effect
heat
+1
vote
1
answer
An observer on a railway platform observed that as a train passed through the station at 108 km/h, the frequency
asked
Feb 27, 2019
in
JEE
by
kratos
doppler effect
jee
jee mains
+2
votes
1
answer
A source of sound is moving along a circular orbit of radius 3 m with an angular velocity of 10 rad/*.
asked
Feb 17, 2019
in
JEE
by
kratos
sound waves
doppler effect
jee
jee mains
+2
votes
1
answer
Now we use a tuning fork of frequency 302 Hz, instead of 300 Hz, with how much velocity should we move the tuning fork,
asked
Feb 16, 2019
in
JEE
by
kratos
class-11
jee mains
class-10
jee main
jee
doppler effect
sound waves
acoustics
jee main 2021
+3
votes
1
answer
A whistle emitting a loud sound of frequency 540 Hz is whirled in a horizontal circle of radius 2 m and at a constant angular speed of 15 rad/*.
asked
Feb 15, 2019
in
JEE
by
kratos
waves
class-11
jee
sound waves
jee mains
doppler effect
+2
votes
1
answer
A spectral line of wavelength 6000 from a star is found to be shifted 1 towards the red.
asked
Feb 13, 2019
in
JEE
by
kratos
doppler effect
jee
jee mains
class-12
wave optics
+3
votes
1
answer
A car is travelling along a road. A stationary policeman observes that the frequency ratio of the siren of the car is 5/4 as it passes.
asked
Feb 11, 2019
in
JEE
by
kratos
doppler effect
jee
jee mains
+1
vote
1
answer
A siren placed at a railway platform is emitting sound of frequency 5 kHz. A passenger sitting in a moving train
asked
Feb 11, 2019
in
JEE
by
kratos
waves
jee
sound waves
jee mains
doppler effect
+2
votes
1
answer
A stationary observer receives sonic oscillations from two tuning forks, one of which approaches and the other recedes with same speed.
asked
Feb 8, 2019
in
JEE
by
kratos
irodov
jee main 2020
oscillations and wave
jee
sound waves
jee mains
elastic waves
doppler effect
+1
vote
1
answer
A train S1, moving with a uniform velocity of 108 km/h, approaches another train S2 standing on a platform.
asked
Feb 4, 2019
in
JEE
by
kratos
the special theory of relativity
class-8
jee
class-12
time and speed
jee mains
distance
doppler effect
jee advanced 2019
+3
votes
1
answer
A whistle of frequency 540 Hz rotates in a circle of radius 2 m at an angular speed of 15 rad/*. What is the lowest and highest
asked
Jan 20, 2019
in
Class 12
by
kratos
waves
neet
class-11
jee
kvpy
sound waves
jee mains
doppler effect
+1
vote
1
answer
A source emitting a sinusoidal sound wave of frequency 480 Hz travels towards a wall at a speed 15 m *^–1.
asked
Jan 19, 2019
in
JEE
by
kratos
doppler effect
jee
jee mains
+1
vote
1
answer
A car is initially at rest, 330 m away from a stationary observer. It begins to move towards the observer with an acceleration of 1.1 m *^-2 ,
asked
Jan 11, 2019
in
JEE
by
kratos
doppler effect
cbse
electricity
jee
jee mains
class-12
+3
votes
1
answer
A train approaching a platform at a speed of 54 km/h sounds a whistle. An observer on the platform finds its frequency to be 1620 Hz.
asked
Jan 7, 2019
in
JEE
by
kratos
waves
class-11
jee
sound waves
jee mains
doppler effect
+3
votes
1
answer
A sonometer wire under tension of 64 Newton vibrating in its fundamental mode is in resonance with a vibrating tuning fork.
asked
Dec 31, 2018
in
Class 12
by
kratos
waves
neet
oscillations
class-11
jee
aiims
jee mains
doppler effect
wave
+1
vote
1
answer
lf a star is moving towards the earth, then the spectrum lines are shifted towards
asked
Dec 27, 2018
in
Class 12
by
kratos
waves
doppler effect
neet
class-11
jee
aiims
jee mains
class-12
wave optics
+3
votes
1
answer
The tension in the string is (in newton)
asked
Dec 24, 2018
in
JEE
by
kratos
doppler effect
jee
jee mains
dynamics
+2
votes
1
answer
Two trains A and B with speeds 20 m *^–1 and 30 m *^–1 respectively in the same direction on the straight track,
asked
Dec 19, 2018
in
JEE
by
kratos
doppler effect
waves
jee
jee mains
To see more, click for the
full list of questions
or
popular tags
.