Home
Class 9
PHYSICS
Intensity level of a sound of intensity ...

Intensity level of a sound of intensity I is 30 dB. Then the ratio `(I//I_(0))` is ____, where `I_(0)` is the threshold of hearing.

A

1000

B

3

C

30

D

30000

Text Solution

Verified by Experts

The correct Answer is:
A

1000
Promotional Banner

Topper's Solved these Questions

  • SOUND

    CENGAGE PHYSICS|Exercise CHALLENGING EXERCISE|16 Videos
  • FRICTION

    CENGAGE PHYSICS|Exercise OLYMPIAD AND NTSE LEVEL EXERCISES (Read the given statements and select the correct option.)|1 Videos
  • STATICS

    CENGAGE PHYSICS|Exercise OLYMPIAD AND NTSE LEVEL EXERCISES|9 Videos

Similar Questions

Explore conceptually related problems

Intensity level of intensity l is 30 dB. The ratio I/I_(0) is (where I_(0) is the threshold of hearing)

The intensity level of a sound of intensity of 10^(-12)wat t//cm^(2) is 40 dB. What is the zero level of intensity ?

The intensity level of two sounds are 100 dB and 50 dB. What is the ratio of their intensities?

The intensity of X-rays decreases exponentially according to the law I=I_(0)e^(-mux) , where I^(0) is the initial intensity of X-rays and I is the intensity after it penetrates a distance x through lead. If mu be the absorption coefficient, then find the dimensional formula for mu .

At a distance r = 100 m from a isotropic point sources of sound 200 Hz the loudness level is L = 50 dB . The standard intensity level, i.e., intensity level just audible to human ear is I_(0) = 0.1 n W//m^(2) . Find the sonic power of the source.

The intensity of a light pulse travelling along a communication channel decreases exponentially with distance x according to the relation I=I_0 e^(-alpha x) , where I_0 is the intensity at x = 0 and alpha is the attenuation constant. What is the distance travelled by the wave, when the intensity reduces by 75% of its initial intensity?

Two sound waves from two different sources interfere at a point to yield a sound of varying intensity. The intensity level between the maximum and minimum is 20 dB. What is the ratio of the intensities of the individual waves?

Many veteran rockers suffer from acute hearing damage because of the high sound levels they endured for years. Many rockers now wear special earplugs to protect their hearing during performances . If an earplug decreases the sound level of the sound waves by 20 dB, what is the ratio of the final intensity I_f of the waves to their initial intensity I_i ?