Physicseasy · Past Paper
An ultrasonic wave has a frequency of 50 kHz. What is its frequency in Hertz?
A50 Hz
B500 Hz
C5,000 Hz
D50,000 Hz
✓ Correct Answer: D — 50,000 Hz
1 kHz = 1000 Hz, so 50 kHz = 50 * 1000 = 50,000 Hz.
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