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Waves & Sound - Frequency MCQs

Practice important Waves & Sound - Frequency MCQs with answers, explanations, theory links, and exam-focused preparation.

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Waves & Sound - Frequency

Waves & Sound - Frequency MCQs With Answers

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CSS - PMS - CCE - PCS - General Science Waves & Sound - Frequency
Which property of sound is primarily related to frequency?
A. Timbre only
B. Loudness only
C. Speed only
D. Pitch
Correct Answer: D
Higher frequency is generally perceived as higher pitch.
CSS - PMS - CCE - PCS - General Science Waves & Sound - Frequency
Human hearing is commonly approximated as spanning which frequency range?
A. 20 kHz to 200 kHz only
B. 1 MHz to 10 MHz
C. 1 Hz to 10 Hz
D. About 20 Hz to 20 kHz
Correct Answer: D
Young healthy humans typically hear roughly 20 Hz–20,000 Hz.
CSS - PMS - CCE - PCS - General Science Waves & Sound - Frequency
If wave speed is constant and frequency increases, wavelength does what?
A. Stays always identical
B. Becomes zero instantly
C. Increases
D. Decreases
Correct Answer: D
Since λ = v/f, higher frequency means shorter wavelength.
CSS - PMS - CCE - PCS - General Science Waves & Sound - Frequency
Which relation connects wave speed v, frequency f and wavelength λ?
A. v = λ/f
B. v = fλ
C. v = f+λ
D. v = f/λ
Correct Answer: B
Wave speed equals frequency times wavelength.
CSS - PMS - CCE - PCS - General Science Waves & Sound - Frequency
What is the SI unit of frequency?
A. Second
B. Meter
C. Decibel
D. Hertz
Correct Answer: D
One hertz means one cycle per second.
CSS - PMS - CCE - PCS - General Science Waves & Sound - Frequency
What is frequency?
A. Energy per unit mass
B. Distance traveled per cycle
C. Number of cycles or oscillations per unit time
D. Amplitude only
Correct Answer: C
Frequency measures how often a periodic event repeats.
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