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What is standing wave ? Give its characteristics
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0
|
4176
|
August 23, 2016
|
|
List the factors affecting the speed of sound in a gaseous medium
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0
|
2165
|
August 23, 2016
|
|
A standing wave is represented by
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1
|
785
|
August 23, 2016
|
|
In a dark room, would you able to tell whether a given note had been produced by a piano or a violin?
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0
|
945
|
August 23, 2016
|
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Explain the factors on which the pitch of a tuning fork depends
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0
|
1421
|
August 23, 2016
|
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When a source of sound passes us, whether it be a car horn or a train whistle, the pitch we hear goes from high to low. Explain why. Use any relation to support your explanation?
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0
|
764
|
August 23, 2016
|
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A steel rod 100 cm long is clamped at its middle. The fundamental frequency of longitudinal vibrations of the rod are given to be 2.53 kHz. What is the speed of sound in steel?
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0
|
1940
|
August 23, 2016
|
|
A 1 metre long tube open at one end, with a movable piston at other end
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1
|
2018
|
August 23, 2016
|
|
A hospital uses an ultrasonic scanner to locate tumours in a tissue
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1
|
4948
|
August 23, 2016
|
|
A bat emits ultrasonic sound of frequency
|
|
1
|
929
|
August 23, 2016
|
|
Give full form of RADAR
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0
|
1026
|
August 23, 2016
|
|
Give full form of SONAR
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|
0
|
1945
|
August 23, 2016
|
|
What are (he essential point of difference between sound and light waves?
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|
0
|
737
|
August 23, 2016
|
|
A narrow sound pulse (for example, a short PiP by a whistle is sent across a medium
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|
1
|
956
|
August 23, 2016
|
|
When we start filling an empty bucket with water, the pitch of sound produced goes on changing. Why?
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|
0
|
3268
|
August 23, 2016
|
|
A source of sound moves towards a stationary observer. Is the increase in pitch due to:
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|
1
|
1646
|
August 23, 2016
|
|
What are fundamental note and overtones?
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0
|
1623
|
August 23, 2016
|
|
Why is the sonometer box hollow and provided with holes?
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|
0
|
5959
|
August 23, 2016
|
|
What are the conditions for resonance of air column with a tuning fork?
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|
0
|
1001
|
August 23, 2016
|
|
What would a person hear, if he moves away from a source of sound with the speed of sound?
|
|
0
|
941
|
August 23, 2016
|
|
A bugle has no valves. How then can we sound different notes on it?
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|
0
|
639
|
August 23, 2016
|
|
Draperies and furniture often improve the acoustic of a room. Why?
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|
0
|
694
|
August 23, 2016
|
|
How roar of a lion can be differentiated from buzzing of a mosquito?
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|
0
|
4357
|
August 23, 2016
|
|
The reverbration time of an empty hall is larger than that of a crowded hall. Why?
|
|
0
|
957
|
August 23, 2016
|
|
Why all the stringed instruments are provided with hollow boxes?
|
|
0
|
4014
|
August 23, 2016
|
|
Can beats be observed in two light sources of nearly equal frequencies?
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|
0
|
1597
|
August 23, 2016
|
|
The velocity of sound in air at N.T.P. is 331 m. Find its velocity when the temperature rises to 91°C and its pressure is doubled
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|
0
|
4238
|
August 23, 2016
|
|
Giving reasons for your selection, select pairs out of the following four waves in a medium
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|
1
|
758
|
August 23, 2016
|
|
Given below are some functions of x and t to represent the displacement
|
|
1
|
703
|
August 23, 2016
|
|
If a balloon is filled with C${{O}_{2}}$ gas, then how will if behave as a lens for sound waves ? if it were filled with hydrogen gas, then what happen
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|
0
|
879
|
August 23, 2016
|