The approximate intensity level of the sound which can cause damage to the ear drum is?

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. Which one of the following elements the drum of a Photostat machine is made up of: _________?

   A. Aluminium
   B. Selenium
   C. Barium
   D. None of these

   Submitted by: Abid Hussain

4. 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

5. Approximate age of sun is _________?

   A. 4.4 billion years
   B. 4.5 billion years
   C. 4.6 billion years
   D. 4.7 billion years

   Submitted by: Kashif Ashraf

6. Approximate age of moon is _________?

   A. 4.51 billion years
   B. 4.55 billion years
   C. 4.53 billion years
   D. 4.57 billion years

   Submitted by: Kashif Ashraf

7. Approximate age of earth is ________?

   A. 4.14 billion years
   B. 4.64 billion years
   C. 4.54 billion years
   D. 4.34 billion years

   Submitted by: Kashif Ashraf

8. Approximate age of milky-way is ________?

   A. 16.5 billion years
   B. 15.5 billion years
   C. 13.5 billion years
   D. 14.5 billion years

   Submitted by: Kashif Ashraf

9. The shape of the external ear is due to____________?

   A. Elastic cartilage
   B. Fibrocartilage
   C. Articular cartilage
   D. none

10. The part of ear that is visible is called _______?

    A. External Ear
    B. Pinna
    C. Internal ear
    D. both A & B

    Submitted by: Muhammad Asif Khajjak