How much intense is $80 d B$ sound in comparison to $40 d B$ ?

10^{4}

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

10^{2}

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

2

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

\frac{1}{2}

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

Open in App

Solution

The correct option is D $10^{4}$
$B_{1} = 10 l o g_{10} (\frac{I_{1}}{I_{0}})$ and $B_{2} = 10 l o g_{10} (\frac{I_{2}}{I_{0}})$
$80 = 10 l o g_{10} (\frac{I_{1}}{I_{0}}) ⟹ 40 = 10 l o g_{10} (\frac{I_{2}}{I_{0}})$
$10^{8} = (\frac{I_{1}}{I_{0}}) ⟹ 10^{4} = \frac{I_{2}}{I_{0}}$ so $\frac{I_{1}}{I_{2}} = \frac{10^{8}}{10^{4}} = 10^{4}$

Suggest Corrections

Similar questions

Q. How many times more intense is a

90 d B

sound than a

40 d B

sound ?

Q. Assertion :A

80 d B

sound has twice the intensity of a

40 d B

sound. Reason: Loudness of a sound of a certain intensity I is defined as

L_{d B} = 10 {log}_{10} {\frac{I}{I}}_{o}

Q. How many time more intense is 90dB sound than 40dB
ans is 100000

90 d B

sound is

^{'} x^{'}

times more intense than

40 d B

sound, then

x

Intensity level 2 cm from a source of sound is 80 dB. If there is no loss of acoustic power in air and intensity of threshold hearing is $10^{- 12}$ $W m^{- 2}$ then, what is the intensity level at a distance of 40 cm from source?

Join BYJU'S Learning Program

How much intense is 80dB sound in comparison to 40dB?

The correct option is D 104B1=10log10(I1I0) and B2=10log10(I2I0)80=10log10(I1I0)⟹40=10log10(I2I0) 108=(I1I0)⟹104=I2I0 so I1I2=108104=104

How much intense is $80 d B$ sound in comparison to $40 d B$ ?