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CBSE
Physics
Loudness and intensity
It is observed that during march-past we hear a bass drum distinctly from a distance compared to the side drums. Name the characteristic of sound associated with the above observation.
CBSE
Physics
Loudness and intensity
Two waves of the same pitch have amplitudes in the ratio $1:3$ . What will be the ratio of their intensities?

CBSE
Physics
Loudness and intensity
Two waves having their intensities in the ratio $9:1$ produce interference. In the interference pattern, the ratio of maximum to minimum intensity is equal to
A. $2:1$
B. $9:1$
C. $3:1$
D. $4:1$
CBSE
Physics
Loudness and intensity
Two loudspeakers are being compared, and one is perceived to be 32 times louder than the other.
What will be the difference in intensity levels between the two?
(A) $3dB$
(B) $10dB$
(C) $25dB$
(D) $50dB$​
CBSE
Physics
Loudness and intensity
In what ways does the loudness depend on amplitude?
CBSE
Physics
Loudness and intensity
The loudness of sound depends upon
A. Its velocity
B. Its amplitude
C. Its pitch
D. Its frequency

CBSE
Physics
Loudness and intensity
Two waves of intensities $I$ and $4I$ produce interference. Then the intensity of constructive and destructive interferences respectively is
CBSE
Physics
Loudness and intensity
Name the factor on which the loudness and softness of sound depends on.
CBSE
Physics
Loudness and intensity
Two coherent sources of intensity ratio $\beta$ interface. Then, the value of ${}^{({{I}_{Max}}-{{I}_{Min}})}/{}_{({{I}_{Max}}+{{I}_{Min}})}$ is
A. $\dfrac{1+\beta }{\sqrt{\beta }}$
B. $\sqrt{\dfrac{1+\beta }{\beta }}$
C. $\dfrac{1+\beta }{2\sqrt{\beta }}$
D. $\dfrac{2\sqrt{\beta }}{1+\beta }$
CBSE
Physics
Loudness and intensity
The loudness of sound depends upon
A. its velocity
B. its pitch
C. its amplitude
D. its frequency
CBSE
Physics
Loudness and intensity
Which wave property determines loudness?
CBSE
Physics
Loudness and intensity
The power, or loudness, of sound is measured on a scale of increased by a factor of $100\left( { = {{10}^2}} \right)$, the sound is called twice as loud and when it increases $10,000\left( { = {{10}^4}} \right)$ times it is called four times as loud. The exponent of ten is called a bel and one decibel is one-tenth of a bel. Zero decibels is chosen as the intensity of the slowest sound which is just audible or is on the threshold of hearing whereas the intensity of the loudest sound is about 170 decibels. A sound of 60 decibels is ___ times more intense than a sound of 40 decibels:
A. 20
B. 100
C. ${10^{20}}$
D. None of these

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