A. 1347
B. 243
C. 1235
D. 1495
Submitted by: Warraich
Related Mcqs:
- 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
- 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
- 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
- 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
- Speed of sound in water at 20 °C is___________?
A. 1450 m/s
B.1474 m/s
C. 1498 m/s
D. 1500+ m/sSubmitted by: ARIF HUSSAIN
- Velocity of sound in air does not change with the change of?
A. Temperature of air
B. Pressure of air
C. Moisture content in air
D. Wind in the direction of propagation of soundSubmitted by: Malik Asghar Hussain
- 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
- A boy sitting in an open car moving with the constant speed throws a ball straight up into the air. The ball falls _________?
A. behind him
B. in front of him
C. into his hand
D. by his sideSubmitted by: Malik Asghar Hussain