McqMate
| Q. |
Hydroscope is an instrument that shows changes in: |
| A. | Sound under water |
| B. | Atmospheric humidity |
| C. | Density of liquid |
| D. | None of these |
| Answer» D. None of these | |
|
Explanation: Hydroscope is an optical device for enabling a person to see an object at a considerable distance below the surface of water by means of a series of mirrors enclosed in a steel tube. Hydrophone is an instrument used for recording sound under water. It is the underwater equivalent of a microphone that measures pressure fluctuations, and these are usually converted to sound pressure level (SPL), a logarithmic measure of the mean square acoustic pressure. |
|
View all MCQs in
PhysicsNo comments yet