Wave properties and the wave equation Quiz
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5 questions, one answer each
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1. A wave has frequency 200 Hz and wavelength 1.7 m. What is its speed?
- A. 340 m s⁻¹
- B. 118 m s⁻¹
- C. 0.0085 m s⁻¹
- D. 34 m s⁻¹
2. Which describes a longitudinal wave?
- A. Oscillations perpendicular to the direction of travel
- B. Oscillations parallel to the direction of travel
- C. No oscillations occur
- D. Oscillations only at the source
3. A displacement-time graph of a wave shows 4 complete cycles in 0.020 s. What is the frequency?
- A. 80 Hz
- B. 5.0 × 10⁻³ Hz
- C. 200 Hz
- D. 0.20 Hz
4. In a sound wave, what is a region of high pressure called?
- A. A rarefaction
- B. A crest
- C. A node
- D. A compression
5. In core practical 4, why does the student measure the distance across ten wavelengths?
- A. To reduce the percentage uncertainty in the wavelength
- B. To increase the frequency
- C. To make the speed of sound ten times larger
- D. To avoid using the oscilloscope