Grade 7 - Physics
Quiz by Swathi Rao
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10 questions
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- Q11. The maximum displacement of a vibrating particle from its mean position is know as itsPitchFrequencyAmplitudeLoudness30s
- Q22. Sound of which of the following frequencies may be detected by the human ear?45000 Hz4.5 HzNone of these4500 Hz30s
- Q33. Sound travels the fastest inSolidsGasesMolten SolidsLiquids30s
- Q44. The number of to and fro movements executed by a vibrating particle in one second is known as itsFrequencyParticle velocityLoudnessAmplitude30s
- Q55. With an increase in the atmospheric temperature, the velocity of soundRemains constantDecreasesIncreases drasticallyIncreases slightly30s
- Q66. Which of the following waves is used in echo-cardiography?TransverseNone of theseUltrasonicInfrasonic30s
- Q77. Tuning forks are used forTuning radio setsTuning musical instrumentsProducing sound while performing experiments in physicsProducing soft music30s
- Q88. The walls and floor of sophisticated auditoriums are covered withGood transmitters of soundGood conductors of soundGood reflectors of soundGood absorbers of sound30s
- Q99. Sound is a type ofElectromagnetic waveLongitudinal waveTransverse waveLight wave30s
- Q1010. For distinctly hearing an echo from a well, the depth of the well should be at least7 m35 m27 m17 m30s