Home
Class 12
PHYSICS
The intensity of a sound wave gets reduc...

The intensity of a sound wave gets reduced by `20%` on passing through a slab. The reduction intensity on passage through two such consecutive slabs

A

0.4

B

0.36

C

0.3

D

0.5

Text Solution

Verified by Experts

The correct Answer is:
B
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • WAVE MOTION

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL-II(LACTURE SHEET ADVANCED) MORE THAN ONE CORRECT ANSWER TYPE QUESTIONS))|3 Videos

  • WAVE MOTION

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL-II(LACTURE SHEET ADVANCED) MATRIX MATCHING TYPE QUESTIONS))|2 Videos

  • WAVE MOTION

    AAKASH SERIES|Exercise PRACTICE SET (EXERCISE-VI (LEVEL-II(ADVANCED) INTEGER TYPE QUESTIONS))|4 Videos

  • UNITS AND MEASUREMENTS

    AAKASH SERIES|Exercise EXERCISE -3|66 Videos

  • WAVE MOTION AND SOUND

    AAKASH SERIES|Exercise PROBLEMS (LEVEL - II)|97 Videos

Similar Questions

Explore conceptually related problems

The intensity of gamma - radiation from a given source is I. On passing through 36 mm of lead, it is reduced to I//8 . Assuming that the intensity in trasmitted radiation varies expontially with the thickness of the material, then the thickness of lead, which will reduce the intensity to I//2 will be

The two coherent sources of equal intensity produce maximum intensity of 100 units at a point. If the intensity of one of the sources is reduced by 50% by reducing its width then the intensity of light at the same point will be

Knowledge Check

  • The intensity of sound wave while passing through an elastic medium falls down by 10% as it covers one metre distance through the medium. If the initial intensity of the sound wave was 100 decibels, its value after it has passes through 3 metre thickness of the medium will be

    A
    70 decibel
    B
    72.9 decibel
    C
    81 decibel
    D
    60 decibel

  • A sound wave is passing through air column in the form of compression and rerefactions. In consecutive compressions and rerefactions.

    A
    density remains constant
    B
    Boyles law is obeyed
    C
    bulk modulus of air oscillates
    D
    there is no transfer of heat.

    • Similar Questions

    Explore conceptually related problems

    The two coherent sources of equal intensity produce maximum intensity of 100 units at a point. If the intensity of one of the sources is reduced by 50% by reducing its width then the intensity of light at the same point will be

    An unpolarized light with intensity 2I_(0) is passed through a polaroid. The resultant intensity of the transmitted light will be

    A sound wave is passing through air column in the form of compression and rerefactions. In consecutive compressions and rerefactions.

    The intensity of gamma radiation from a given source is I On passing through 36 mm of lead , it is reduced to (1)/(8) . The thickness of lead which will reduce the intensity to (1)/(2) will be

    Unpolarized light with intensity I_(0) is incident on combination of two polarizers as shown . The intensity of the light after passage through both the polaroids will be.

    A ray of light is incident on the left vertical face of the glass slab. If the incident light has an intensity I and on each reflection the intensity decreases by 90% and on each refraction the intensity decreases by 10%, find the ratio of the intensities of maximum to minimum in reflected pattern.

    Home
    Profile