Plane Waves of Ultrasound, F = 51

question 31

Multiple Choice

Plane waves of ultrasound, f = 51.0 kHz, impinge on a flat plane with a 1.00 cm-wide slit. What is the total angular width (2θ) of diffracted sound waves when the speed of sound in air is 340 m/sec.

• A) 167°
• B) 83.6°
• C) 19.5°
• D) 41.8°
• E) 0.11°

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