Longitudinal and transverse waves and polarisation Quiz
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5 questions, one answer each
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1. Which of these waves cannot be plane polarised?
- A. Microwaves
- B. Visible light
- C. Sound in air
- D. Radio waves
2. Gamma rays and radio waves travel through a vacuum. How do their speeds compare?
- A. They are the same
- B. Gamma rays are faster
- C. Radio waves are faster
- D. It depends on the amplitude
3. Unpolarised light passes through two polarising filters. The second filter is rotated until no light is transmitted. What is the angle between the transmission axes?
- A. 0°
- B. 90°
- C. 45°
- D. 180° only
4. A transmitter aerial is a vertical rod. In which orientation does a rod receiver aerial pick up the strongest signal?
- A. Vertical
- B. Horizontal and perpendicular to the direction of travel
- C. At 45° to the vertical in every case
- D. Any orientation, as the signal is the same
5. Which of these is evidence that light is a transverse wave?
- A. Light carries energy
- B. Light can be reflected
- C. Light can be refracted
- D. Light can be plane polarised