A sound wave whose frequency is 5000 Hz travels in air and then hits the water surface. The ratio of its wavelengths in water and air is:
A. 4.30
B. 0.23
C. 5.30
D. 1.23
Answer:A
A sound wave whose frequency is 5000 Hz travels in air and then hits the water surface. The ratio of its wavelengths in water and air is:
A. 4.30 B. 0.23 C. 5.30 D. 1.23