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When we start filling an empty bucket with water, the pitch of sound produced goes on changing. Why?
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|
0
|
3208
|
August 23, 2016
|
|
A source of sound moves towards a stationary observer. Is the increase in pitch due to:
|
|
1
|
1583
|
August 23, 2016
|
|
What are fundamental note and overtones?
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|
0
|
1568
|
August 23, 2016
|
|
Why is the sonometer box hollow and provided with holes?
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0
|
5878
|
August 23, 2016
|
|
What are the conditions for resonance of air column with a tuning fork?
|
|
0
|
948
|
August 23, 2016
|
|
What would a person hear, if he moves away from a source of sound with the speed of sound?
|
|
0
|
906
|
August 23, 2016
|
|
A bugle has no valves. How then can we sound different notes on it?
|
|
0
|
573
|
August 23, 2016
|
|
Draperies and furniture often improve the acoustic of a room. Why?
|
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0
|
643
|
August 23, 2016
|
|
How roar of a lion can be differentiated from buzzing of a mosquito?
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|
0
|
4299
|
August 23, 2016
|
|
The reverbration time of an empty hall is larger than that of a crowded hall. Why?
|
|
0
|
907
|
August 23, 2016
|
|
Why all the stringed instruments are provided with hollow boxes?
|
|
0
|
3946
|
August 23, 2016
|
|
Can beats be observed in two light sources of nearly equal frequencies?
|
|
0
|
1550
|
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
|
|
0
|
4132
|
August 23, 2016
|
|
Giving reasons for your selection, select pairs out of the following four waves in a medium
|
|
1
|
697
|
August 23, 2016
|
|
Given below are some functions of x and t to represent the displacement
|
|
1
|
646
|
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
|
|
0
|
832
|
August 23, 2016
|
|
A person deep inside water cannot hear sound produced in air. Why?
|
|
0
|
2598
|
August 23, 2016
|
|
A vessel is placed below a water tap. We can estimate the height of the water level reached in the vessel from a distance simply by listening to the sound. Why?
|
|
0
|
1963
|
August 23, 2016
|
|
Air gets thinner as we go up in the atmosphere. Will the velocity of sound change?
|
|
0
|
2099
|
August 23, 2016
|
|
Set up a relation between speed of sound in a gas and root mean square velocity of the molecules of that gas
|
|
0
|
4013
|
August 23, 2016
|
|
Distinguish between sound waves and radio waves of same frequency, say 15 kHz
|
|
0
|
868
|
August 23, 2016
|
|
Match the following correctly:
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|
1
|
650
|
August 23, 2016
|
|
The speed of sound waves depends on tempera true but speed of light waves does not Why?
|
|
0
|
491
|
August 23, 2016
|
|
Can the wave functions
|
|
1
|
510
|
August 23, 2016
|
|
The shape of pulse gets distorted during propagation in a dispersive medium. Explain why?
|
|
0
|
1748
|
August 23, 2016
|
|
Bats can ascertain distances directions, nature and size of obstacles without any eyes. Explain why?
|
|
0
|
2768
|
August 23, 2016
|
|
What is a hormonic wave function?
|
|
0
|
807
|
August 23, 2016
|
|
Explosions on other planets are not heard on earth. Why?
|
|
0
|
620
|
August 23, 2016
|
|
Two organ pipes of same length, open at both ends produce sound of different pitch, if their radii are different. Why?
|
|
0
|
2201
|
August 23, 2016
|
|
Define reverberation
|
|
0
|
677
|
August 23, 2016
|