MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Variation of Intensity in Space

When a person...

Question

When a person wears a hearing aid, the sound intensity level increases by 30 dB. The sound intensity increases by

A

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

C

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B
$L_{2} - L_{1} = 30 d B$
$10 d B l o g \frac{I_{2}}{I_{0}} - 10 d B l o g \frac{I_{2}}{I_{0}} - 30 d B$
$l o g_{10} \frac{I_{2}}{I_{1}} = 3 \Rightarrow \frac{I_{2}}{I_{1}} = 10^{3}$
Hence, the sound intensity increases by $10^{3} .$

Suggest Corrections

thumbs-up

1

Similar questions

Q. When a person wears a hearing aid, the sound intensity level increases by 30 dB. The sound intensity increases by

Q. Intensity level of a sound of intensity

I

30 d B

I / I_{o}

I_{o}

is the threshold of hearing)

Q. Assertion :Sound level increases linearly with intensity of sound. Reason: If intensity of sound is doubled sound level increases approximately 3 dB.

Q. Calculate the change in intensity level when the intensity of sound increases by

10^{6}

times its original intensity.

Q. By what factor must the sound intensity be increased to increase the sound intensity level by 13.0 dB ?

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Intensity of Sound

PHYSICS

Watch in App

explore_more_icon

Explore more

Variation of Intensity in Space

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon