1.

(c) infrasonic 1. A sound wave has frequency of 2 kHz andwavelength of 35 cm. If an obseryer is1.4 km away from the source. At whattime interval could the observer hear thesound?(a) 2s (b) 20s (c) 0.55 (d) 4sAn​

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(a) 2S is the CORRECT answerhope it HELPS...



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