Q. The number of oscillations per unit time is called the __________ of the wave.

प्रति इकाई समय में दोलनों की संख्या को तरंग का __________ कहा जाता है।

Period
अवधि

Frequency
आवृत्ति

Wavelength
वेवलेंथ

Amplitude
आयाम

Frequency (f) is the number of complete oscillations per second, measured in hertz (Hz).

It is related to period $T$ as:

f = \frac{1}{T}

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