|
When we start filling an empty bucket with water, the pitch of sound produced goes on changing. Why?
|
|
0
|
3268
|
August 23, 2016
|
|
A source of sound moves towards a stationary observer. Is the increase in pitch due to:
|
|
1
|
1646
|
August 23, 2016
|
|
What are fundamental note and overtones?
|
|
0
|
1623
|
August 23, 2016
|
|
Why is the sonometer box hollow and provided with holes?
|
|
0
|
5960
|
August 23, 2016
|
|
What are the conditions for resonance of air column with a tuning fork?
|
|
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?
|
|
0
|
639
|
August 23, 2016
|
|
Draperies and furniture often improve the acoustic of a room. Why?
|
|
0
|
694
|
August 23, 2016
|
|
How roar of a lion can be differentiated from buzzing of a mosquito?
|
|
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?
|
|
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
|
|
0
|
4240
|
August 23, 2016
|
|
Giving reasons for your selection, select pairs out of the following four waves in a medium
|
|
1
|
760
|
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
|
|
0
|
879
|
August 23, 2016
|
|
A person deep inside water cannot hear sound produced in air. Why?
|
|
0
|
2683
|
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
|
2061
|
August 23, 2016
|
|
Air gets thinner as we go up in the atmosphere. Will the velocity of sound change?
|
|
0
|
2168
|
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
|
4101
|
August 23, 2016
|
|
Distinguish between sound waves and radio waves of same frequency, say 15 kHz
|
|
0
|
914
|
August 23, 2016
|
|
Match the following correctly:
|
|
1
|
704
|
August 23, 2016
|
|
The speed of sound waves depends on tempera true but speed of light waves does not Why?
|
|
0
|
531
|
August 23, 2016
|
|
Can the wave functions
|
|
1
|
557
|
August 23, 2016
|
|
The shape of pulse gets distorted during propagation in a dispersive medium. Explain why?
|
|
0
|
1819
|
August 23, 2016
|
|
Bats can ascertain distances directions, nature and size of obstacles without any eyes. Explain why?
|
|
0
|
2829
|
August 23, 2016
|
|
What is a hormonic wave function?
|
|
0
|
836
|
August 23, 2016
|
|
Explosions on other planets are not heard on earth. Why?
|
|
0
|
668
|
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
|
2259
|
August 23, 2016
|
|
Define reverberation
|
|
0
|
735
|
August 23, 2016
|