If the number of cycles is fixed and the ultrasound frequency increases, pulse duration

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Multiple Choice

If the number of cycles is fixed and the ultrasound frequency increases, pulse duration

Explanation:
The duration of a pulse depends on how long each cycle lasts. If you keep the same number of cycles in a pulse, the total time is the number of cycles times the period of one cycle. The period is the inverse of frequency, so pulse duration = N × (1/f). As frequency increases, the period gets shorter, so the pulse duration decreases. It won’t stay the same or increase, and it won’t become zero unless frequency is infinite. Doubling the frequency, for instance, halves the pulse duration.

The duration of a pulse depends on how long each cycle lasts. If you keep the same number of cycles in a pulse, the total time is the number of cycles times the period of one cycle. The period is the inverse of frequency, so pulse duration = N × (1/f). As frequency increases, the period gets shorter, so the pulse duration decreases. It won’t stay the same or increase, and it won’t become zero unless frequency is infinite. Doubling the frequency, for instance, halves the pulse duration.

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