A. 1450 m/s
B.1474 m/s
C. 1498 m/s
D. 1500+ m/s
Submitted by: ARIF HUSSAIN
Related Mcqs:
- speed of sound in dry air at 20 °C is___________?
A. 353 m/s
B. 345 m/s
C. 343 m/s
D. none of themSubmitted by: ARIF HUSSAIN
- The echo (reflected sounD. will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least ________?
A. 1120 ft
B. 120 ft
C. 56 ft
D. 100 ft
E. None of these - Name the branch of science which deals with the study of sound and sound waves?
A. Aeronautics
B. Acoustics
C. Aerostatics
D. AetiologySubmitted by: ABDUL HAYEE
- The speed of sound in air at sea level is approximately____________?
A. 300 meter per second
B. 320 meter per second
C. 340 meters per second
D. 370 meter per secondSubmitted by: ABDUL AZIZ KHAN
- Sound travels in air at an average speed of nearly________ ?
A. 1257 miles per hour
B. 755 miles per hour
C. 330 miles per hour
D. None of theseSubmitted by: Rashid Mehmood
- Speed of sound in air is _______km/h?
A. 1347
B. 243
C. 1235
D. 1495Submitted by: Warraich
- Sound travels about ___________times faster in water than in air.
A. 2
B. 3
C. 4
D. 5Submitted by: Munwar Ali Sohu
- When sound waves travel from air to water which of the following quantities remains unchanged?
A. Speed
B. Frequency
C. Intensity
D. WavelengthSubmitted by: Rashid Mehmood
- The gas used in a refrigerator to cool water is___________?
A. Nitrogen
B. Carbon dioxide
C. Methane
D. TetrafluoroethaneUpdated by: NoumaN
- In blood, the percentage of water is___________?
A. 75%
B. 85%
C. 90%
D. 95%Submitted by: Ashfaque Ali Khoso