

MCQOPTIONS
Saved Bookmarks
1. |
An underwater sonar source operating at a frequency of 60 KHz directs its beam towards the surface. If the velocity of sound in air is 330 m/s, the wavelength and frequency of waves in air are: [DPMT 2004] |
A. | 5.5 mm, 60 KHz |
B. | 330 m, 60 KHz |
C. | Velocity |
D. | 5.5 mm, 80 KHz |
Answer» B. 330 m, 60 KHz | |