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NCERT EXEMPLAR-SOUND-Sound
- Note is a sound :
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- A key of a mechanical piano is struck gently and then struck again but...
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- In SONAR, we use :
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- Sound travels in air if :
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- When we change feeble sound to loud we increase its :
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- In the curve, half the wavelength is : .
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- Earthquake produces which kind of sound before the main shock wave beg...
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- Infrasound can be heard by :
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- Before playing the orchestra in a musical concert, a sitarist tries to...
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- the displacement versus time relation for a disturbance travelling wit...
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- Which of the above two graphs : (a) and (b)the human voice is likely t...
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- A girl is sitting in the middle of a park of dimension 12 m xx 12 m. O...
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- why do we hear the sound produced by the humming bees while the sound ...
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- If any explosion takes place at the bottom of a lake, what type of sho...
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- Sound produced by a thunderstorm is heard 10 s after the lighting is s...
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- For hearing the loudest ticking sound heard by the ear, find the angle...
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- Why is the ceiling and wall behind the stage of good conference halls ...
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- Represent graphically by two separate diagrams in each case : (i) Tw...
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- Establish the relationship between speed of sound, its wavelength and ...
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- Draw a curve showing density or pressure variations with respect to di...
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