Sound travels in air at an average speed of nearly________ ?

Related Mcqs:

1. Sound travels about ___________times faster in water than in air.

   A. 2 B. 3 C. 4 D. 5 Submitted by: Munwar Ali Sohu...

2. 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 second Submitted by: ABDUL AZIZ KHAN...

3. 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 them Submitted by: ARIF HUSSAIN...

4. Speed of sound in air is _______km/h?

   A. 1347 B. 243 C. 1235 D. 1495 Submitted by: Warraich...

5. 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...

6. Name the branch of science which deals with the study of sound and sound waves?

   A. Aeronautics B. Acoustics C. Aerostatics D. Aetiology Submitted by: ABDUL HAYEE...

7. Speed of sound in water at 20 °C is___________?

   A. 1450 m/s B.1474 m/s C. 1498 m/s D. 1500+ m/s Submitted by: ARIF HUSSAIN...

8. 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 sound Submitted by: Malik Asghar Hussain...

9. When sound waves travel from air to water which of the following quantities remains unchanged?

   A. Speed B. Frequency C. Intensity D. Wavelength Submitted by: Rashid Mehmood...

10. The average speed of a moving object during a given interval of time is always:

    A. the magnitude of its average velocity over the interval B. the distance covered during the time interval divided by the time interval C. one-half its speed at the end of the interval D. its acceleration multiplied by the time interval E. one-half its acceleration multiplied by the time interval Submitted by: Mansoor Ul Haque...