A Source Emits Sound with a Frequency of 1000 Hz

question 1

Multiple Choice

A source emits sound with a frequency of 1000 Hz. It and an observer are moving toward each other, each with a speed of 100 m/s. If the speed of sound is 340 m/s, the observer hears sound with a frequency of:

• A) 294 Hz
• B) 545 Hz
• C) 1000 Hz
• D) 1830 Hz
• E) 3400 Hz

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