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Nda physics quiz oscillation and waves

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Question 1. Which one among the following is not produced by sound waves in air?   (NA)






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Question 2. A swinging pendulum has its maximum acceleration at   (NA)






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Question 3. For a simple pendulum, the graph between T2 and L (where, T is the time period and L is the length) is  (NA)






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Question 4. SONAR is mostly used by  (NA)






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Question 5. The ceilings of a concert hall are generally curved   (NA)






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Question 6. Bats can know about their prey at a distance even in the night by emitting  (NA)






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Question 7. Sound waves are similar to the waves  (NA)






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Question 8. A sound wave has frequency of 2 kHz and wavelength of 35cm. If an observer is 1.4 km away from the source, then after what time interval could the observer hear the sound  (NA)






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Question 9. A sound wave has frequency of 2 kHz and wavelength of 35cm. If an observer is 1.4 km away from the source, then after what time interval could the observer hear the sound  (NA)


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Question 10. Which one among the following waves bats use to detect the obstacles in their flying path?   (NA)






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Question 11. The loudness of sound is related to   (NA)






 
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