Quiz on Sound Test 6 ( physics ) Welcome to your Quiz on Sound Test 6 ( physics ) Name Email 1.Vibration of which among the following produces only odd harmonics? (a) An air column in a closed organ pipe (b) A vibrating string fixed at two (c) An air column in an open organ pipe (d) A vibrating rod fixed at two ends None 2.If an object executes 10 oscillations per second, then its frequency in kilohertz is equal to: (a) 1 (b) 0.01 (c) 0.1 (d) 10 None 3.Which of the following characteristics of sound is measured in hertz (Hz) ? (a) Frequency of the sound (b) Intensity of the sound (c) Wavelength of the sound (d) Loudness of the sound None 4.Bats search out prey and fly in dark night by emitting and detecting reflections of which type of Sound waves ? (a) Sonic waves (b) Hypersonic waves (c) Subsonic waves (d) Ultrasonic waves (c) Subsonic waves (d) Ultrasonic waves None 5.In which medium does sound travel faster ? (a) Gas (b) Liquid (c) Solid (d) Vacuum None 6.What is the approximate speed of sound in distilled water at 25°C (77°F) ? (a) 1498 m/s (b) 1284 m/s (c) 3980 m/s (d) 1598 m/s None 7.What is the approximate speed of sound in distilled water at 25°C (77°F) ? (a) 1498 m/s (b) 1284 m/s (c) 3980 m/s (d) 1598 m/s None 8.What is the velocity of sound in air ? (a)220 m/sec (b)232 m/sec (c)343 m/sec (d)110 m/sec None 9.When the speed of an object exceeds the velocity of sound, Then it is said to be moving with ______ speed. (a) Subsonic Speed (b) Supersonic speed (c) Ultrasonic Speed (d) 1 Mach speed None 10.The audible range of sound for an average adult human being is ______. (a) 2 Hz - 20000 Hz (b) 2 Hz - 2000 Hz (c) 20 Hz - 2000 Hz (d) 20 Hz - 20000 Hz None 11.The audible range of sound for human beings is from:: (a) 20 Hz to 200 kHz (b) 10 Hz to 100 kHz (c) 20 Hz to 20 kHz (d) 10 Hz to 10k None 12.Sound cannot travel through______. (a) vacuum (b)soil (c)water (d)fire None 13.Which of the following creatures use ultrasonic sound to catch their prey ? (a) Bats (b) Cats (c) Hawks (d) Dogs None Time's up
