10. The frequency of a wave is doubled when the wavelength remains the same. What happens to the speed of the wave?

A. It doubles
B. It quadruples
C. Is is cut to one-half
D. Remains Unchanged

11. Wich of the following statement is TRUE about longitudinal waves? Longitudinal waves have the same ____.

A. frequencies
B. velocities
C. wavelengths
D. direction of the vibration of particles

12. A transverse wave is traveling through a medium. See diagram below. How do particles of a medium vibrate?

A. parallel to the lone joining AD.
B. along the line joining CI.
C. perpendicular to the line joining AD.
D. at various angles to the line CI.

13. What happens to the wavelength as a wave traveles into a medium with an increasing speed? Its wavelength _____.
A. decreases
B. increases
C. remains the same
D. none of the these

14. What is the amplitude of the wave in the diagram below?

A. 0.03
B. 0.04
C. 0.05m
D. 0.06m

15. What is the wavelength of the wave in the diagram above (Question #14)?
A. 0.030m
B. 0.040m
C. 0.060m
D. 0.080m
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