ARDMS SPI EXAM 200 QUESTIONS AND

ARDMS SPI EXAM 200 QUESTIONS AND
When the direction of the wave propagation is parallel to the particle motion of the
medium, the wave being transmitted is called a:
A) surface wave.
B) longitudinal wave.
C) transverse wave.
D) non-linear sound. - ANSWER>> B) longitudinal wave
If the sound beam attenuated 6 dB, what will happen to the overall intensity?
A) Quadrupled
B) Doubled
C) Halved
D) Quartered - ANSWER>> D) Quartered
Frequency increased from 3 MHz to 6 MHz, what will happen to wavelength?
A) Doubled
B) Quadrupled
C) Halved
D) Quartered - ANSWER>> C) Halved
Intensity is equal to:
A) power/area
B) propagation speed/frequency
C) density x propagation speed 

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