Refraction of sound can occur in:

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. Sound cannot travel through __________

   A. Solid
   B. Liquid
   C. Gases
   D. Vaccum

   Submitted by: M Khobaib Tariq

4. A loudspeaker changes _________ energy into sound energy.

   A. Chemical
   B. Electrical
   C. Light
   D. Kinetic

   Submitted by: Danish Balani

5. Echo is a ___________ of sound?

   A. Reflection
   B. Refraction
   C. Interference
   D. None

   Submitted by: Awais

6. 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

7. 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

8. Which of the following is used for hearing the sound of heart and lungs?

   A. Steroscope
   B. Stethoscope
   C. Oscillator
   D. Oncolator

   Submitted by: Farhan Rana

9. Sound of frequency below 20 Hz is:___________?

   A. Audiosonic
   B. Infrasonic
   C. Ultrasonic
   D. Supersonic

   Submitted by: Fahad Mehsud

10. Which animal can create the loudest sound among any living creature?

    A. Donkey
    B. Monkey
    C. Humpback whales
    D. None of these

    Submitted by: Kamlesh Kumar