ON 20 The velocity of sound in a certain medium is 1000 m/s. If sound wave has a frequency of 500 Hz, the wavelength would be 200 m 50 m O 2m 20 m
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- Wavelength of ultrasonic waves in air is of the order of : (a) 5 x 10- m () 5x 10' m (6) 5 x 10' m (d) 5 x 10* mTrue or False: When a sound wave propagates through air, the particles of air oscillate along the same direction that the sound wave travels. O True False 11 12 13 14 15 16 17 18As a sound wave propagates further over time, which of the following would be true? * O The ampltidue of the wave will slowly increase over time O The frequency of the wave will increase as it travels further O The intensity of the sound wave will decrease O The pitch of the sound wave will decrease None of the above will occur
- A tuning fork with frequency 457 Hz and a tuning fork with frequency 466 Hz are struck simultaneously. (a) What average frequency will you hear? Number Hz (b) What will the beat frequency be? Number HzA sound of 60 dB is OOOO 2 times as intense as a sound of 40 dB 1.5 times as intense as a sound of 40 dB O4 times as intense as a sound of 40 dB 1,000 times as intense as a sound of 40 dB 100 times as intense as a sound of 40 dB 16 times as intense as a sound of 40 dB 20 times as intense as a sound of 40 dB 10 times as intense as a sound of 40 dB O 8 times as intense as a sound of 40 dBA sound wave is travelling in air has a wavelength of 0.44 m, What is the frequency of the wave in Hz, if the temperature of the air is 35°F.