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KUMAR PRAKASHAN-SOUND-QUESTIONS AND ANSWERS (Fill in the blanks by selecting the correct alternative from those given in the bracket:)
- Maximum displacement of a vibrating body on either side of its equilib...
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- If a vibrating body completes 50 vibrations in 1s, then its time perio...
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- Waves which require a medium for propagation are called ......... wave...
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- ......... waves are transverse waves. (Light, Sound, Mechanical)
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- ......... waves are non-mechanical waves. (Light, Sound, Water surface...
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- Sound waves cannot propagate through (glass, water, vacuum)
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- In ........ waves particles of the medium oscillate in perpendicular d...
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- Sound waves of frequencies below 20 Hz are called ......... sound wave...
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- Whale can detect... sound waves. (audible, ultrasonic, infrasonic)
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- For hearing distinct echo, the minimum distance of the obstacle from t...
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- The outer of sun is called (1 thermoshere, 2 exoshere, 3 photoshere 4 ...
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- The echo is heard of the time interval between the original sound and ...
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- The loudness of the sound is dependent on .... (amplitude, velocity, ...
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- The level of noise is measured in unit .......... (dB, Wm^(-2) A)
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