|
Write three differences between transverse waves and longitudinal waves
|
|
0
|
6569
|
March 21, 2018
|
|
Draw a curve showing density or pressure variations with respect to distance
|
|
0
|
1820
|
March 21, 2018
|
|
For hearing the loudest ticking sound heard by the ear, find the angle x in the figure
|
|
0
|
1036
|
March 21, 2018
|
|
Why do we hear the sound produced by the humming bees while the sound of vibrations of pendulum is not heard?
|
|
0
|
3243
|
March 21, 2018
|
|
What is a stethoscope? Name the principle on which a stethoscope works
|
|
0
|
2499
|
March 21, 2018
|
|
Explain the terms crests and troughs of a wave
|
|
0
|
830
|
March 21, 2018
|
|
. What are transverse waves? Give two examples
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|
0
|
535
|
March 21, 2018
|
|
What are longitudinal waves? Give two examples
|
|
0
|
1014
|
March 21, 2018
|
|
Draw a graph for a wave representing wave disturbance and time for a sound changing from low pitch to high pitch, keeping the amplitude of the sound same
|
|
0
|
3751
|
March 21, 2018
|
|
Define frequency and wavelength with reference to sound
|
|
1
|
4909
|
November 29, 2016
|
|
Draw a trace of the sound wave which has a higher frequency
|
|
1
|
851
|
November 29, 2016
|
|
When a workman hammers to one end of the long iron pipeline
|
|
1
|
643
|
November 29, 2016
|
|
How are ultrasonic waves different from ordinary sound waves? State two applications of ultrasound
|
|
0
|
3051
|
November 29, 2016
|
|
An echo is heard on a day when temperature is about 22°C
|
|
1
|
2365
|
November 29, 2016
|
|
What is meant by loudness of sound?
|
|
1
|
3715
|
November 29, 2016
|
|
Name the types of waves and two examples associated with
|
|
1
|
1996
|
November 29, 2016
|
|
Distinguish between sound waves and light waves
|
|
0
|
1737
|
November 29, 2016
|
|
What is wave motion? Write any four characteristics of wave motion
|
|
0
|
3403
|
November 29, 2016
|
|
Through what type of medium, can
|
|
1
|
799
|
November 29, 2016
|
|
How is it that, bats are able to fly at night without colliding with other objects?
|
|
0
|
2867
|
November 29, 2016
|
|
Distinguish between the terms
|
|
1
|
564
|
November 29, 2016
|
|
Name two species each of animals which can produce and detect (a) infrasonic waves (b) ultrasonic waves
|
|
1
|
2764
|
November 29, 2016
|
|
What is hearing aid? Briefly describe its working principle
|
|
0
|
1933
|
November 29, 2016
|
|
Write two main properties of ultrasound
|
|
1
|
1594
|
November 29, 2016
|
|
Which has shorter wavelength infrasonic or ultrasonic?
|
|
1
|
1632
|
November 29, 2016
|
|
What kind of wave needs a material medium to propagate?
|
|
1
|
1409
|
November 29, 2016
|
|
A nail was gently touched by the hammer and then was hit harder
|
|
1
|
1675
|
November 29, 2016
|
|
Find the distance of cloud from you when you hear a thunder 3 s
|
|
1
|
3857
|
November 29, 2016
|
|
A student went to a hill station early in the morning
|
|
1
|
2100
|
November 29, 2016
|
|
The reverberation time of a hall used
|
|
1
|
1938
|
November 29, 2016
|