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Recent questions tagged echoes
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vote
1
answer
Point out the waves from the given list, i.e., light, sound, radio waves,
asked
Apr 6, 2019
in
Class 10
by
kratos
vibration of sound
class-10
icse
echoes
+1
vote
1
answer
What do you understand by (i) free (or natural) and (ii) forced vibrations?
asked
Apr 5, 2019
in
Class 10
by
kratos
vibration of sound
class-10
icse
echoes
+1
vote
1
answer
A man stands at a distance of 68m from a cliff and fires a ***.
asked
Apr 4, 2019
in
Class 10
by
kratos
sound
vibration of sound
class-10
icse
echoes
+2
votes
1
answer
(a) : 1. What is the principle on which SONAR is based. 2. An observer stands at a certain distance away from a cliff
asked
Apr 3, 2019
in
Class 10
by
kratos
sound
cbse
vibration of sound
class-10
icse
echoes
+3
votes
1
answer
Pitch of a sound depends on:
asked
Apr 1, 2019
in
Class 11
by
kratos
waves
sound
cbse
class-8
vibration of sound
class-11
oscillations and wave
class-10
icse
echoes
+1
vote
1
answer
A tuning fork, struck by a rubber pad, is held over a length of air column in a tube.
asked
Mar 31, 2019
in
JEE
by
kratos
waves and optics
sound
vibration of sound
jee
class-10
icse
jee mains
echoes
+3
votes
1
answer
The diagram below shows the displacement-time graph for a vibrating body.
asked
Mar 30, 2019
in
Class 10
by
kratos
sound
cbse
class-8
vibration of sound
class-10
icse
echoes
+3
votes
1
answer
Why are certain musical instruments provided with hollow sound boards or sound boxes?
asked
Mar 29, 2019
in
Class 11
by
kratos
waves
sound
vibration of sound
oscillations
class-11
class-10
icse
echoes
+3
votes
1
answer
A tall cylinder is filled with viscous oil. A round pebble is dropped from the top with zero initial velocity
asked
Mar 27, 2019
in
JEE
by
kratos
transient processes
vibration of sound
class-11
jee
kinematics
thermodynamics
class-10
icse
jee mains
echoes
+3
votes
1
answer
Why is an echo not heard when distance between the source of sound and reflection body is less than 10m?
asked
Mar 27, 2019
in
Class 10
by
kratos
vibration of sound
class-10
icse
echoes
+2
votes
1
answer
What are mechanical waves?
asked
Mar 26, 2019
in
Class 10
by
kratos
vibration of sound
class-10
icse
echoes
+3
votes
1
answer
Why are the stringed instruments provided with large wind box?
asked
Mar 26, 2019
in
Class 10
by
kratos
echoes
sound
class-10
class-8
icse
vibration of sound
+2
votes
1
answer
A sound made on the surface of a lake takes 3 * to reach a boatman.
asked
Mar 23, 2019
in
Class 10
by
kratos
sound
class-8
vibration of sound
crossing the river
class-10
icse
echoes
+2
votes
1
answer
A man standing 25 m away from a wall produces a sound and receives the reflected sound.
asked
Mar 22, 2019
in
Class 10
by
kratos
sound
vibration of sound
class-10
icse
echoes
+3
votes
1
answer
Two identical guitars are played by two persons to give notes of the same pitch.
asked
Mar 22, 2019
in
Class 10
by
kratos
sound
class-8
vibration of sound
class-10
icse
echoes
+1
vote
1
answer
With which of the following frequencies does a tuning fork of 256 Hz resonate ?
asked
Mar 21, 2019
in
Class 12
by
kratos
waves
neet
sound
acoustics
vibration of sound
class-11
aiims
class-10
icse
echoes
+2
votes
1
answer
Two astronauts cannot hear each other on the moon. Why?
asked
Mar 20, 2019
in
Class 10
by
kratos
vibration of sound
class-10
icse
echoes
+1
vote
1
answer
If the amplitude of a wave is doubled, what will be the effect on its loudness ?
asked
Mar 20, 2019
in
Class 10
by
kratos
sound
class-8
vibration of sound
class-10
icse
echoes
+3
votes
1
answer
Define the term Amplitude.
asked
Mar 18, 2019
in
Class 10
by
kratos
vibration of sound
class-10
icse
echoes
+2
votes
1
answer
A blade, fixed at one end, is made to vibrate by pressing its other end and then releasing it. State one way
asked
Mar 17, 2019
in
Class 10
by
kratos
sound
class-8
vibration of sound
class-9
class-10
icse
echoes
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