Velocity of sound in air does not change with the change of?

Related Mcqs:

1. 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

2. 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

3. During which process of energy exchange does cold air displace warmer air?

   A. Convection 
   B.  Radiation
   C.  Conduction
   D.  None of these

   Submitted by: Rida

4. Escape velocity of a rocket fired from the earth towards the moon is a velocity to get rid of the _______?

   A. Centripetal force due to the earth’s rotation
   B. Earth’s gravitational pull
   C. Pressure of the atmosphere
   D. Moon’s gravitational pull

   Submitted by: Rashid Mehmood

5. 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

6. 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

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

   A. 2
   B. 3
   C. 4
   D. 5

   Submitted by: Munwar Ali Sohu

8. 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 these

   Submitted by: Rashid Mehmood

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. Speed of sound in air is _______km/h?

    A. 1347
    B. 243
    C. 1235
    D. 1495

    Submitted by: Warraich