Intensity level of a sound of intensity $I$ is $30\, dB$. The ratio $\frac{I}{{{I_0}}}$ is (Where ${I_0}$ is the threshold of hearing)
Medium
Download our app for free and get started
(b) $L = 10{\log _{10}}\left( {\frac{I}{{{I_0}}}} \right) = 30 \Rightarrow \frac{I}{{{I_0}}} = {10^3}$
Download our appand get started for free
Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*
Similar Questions
- 1At standard temperature and pressure the density of a gas is $1.3$ $kg/{m^3}$ and the speed of the sound in gas is $330\, m/sec.$ Then the degree of freedom of the gas will beView Solution
- 2View SolutionWhat is the phase difference between the displacement wave and pressure wave in sound wave?
- 3The equation $y = 0.15\sin 5x\cos 300t$, describes a stationary wave. The wavelength of the stationary wave is .... $m$View Solution
- 4A stretched wire of length $110 cm$ is divided into three segments whose frequencies are in ratio $1 : 2 : 3$. Their lengths must beView Solution
- 5The power of sound from the speaker of a radio is $20$ milli watt by turning the knob of the volume control the power of the sound is increased to $400$ milli watt. The power increase in decibles as compared to the original power is ..... $dB$View Solution
- 6Speed of a transverse wave on a straight wire (mass $6.0\; \mathrm{g}$, length $60\; \mathrm{cm}$ and area of cross-section $1.0\; \mathrm{mm}^{2}$ ) is $90\; \mathrm{ms}^{-1} .$ If the Young's modulus of wire is $16 \times 10^{11}\; \mathrm{Nm}^{-2},$ the extension of wire over its natural length isView Solution
- 7The equation of a progressive wave is given by $y = a\sin (628t - 31.4x)$View Solution
If the distances are expressed in cms and time in seconds, then the wave velocity will be ...... $cm/sec$
- 8In open organ pipe, if fundamental frequency is $n$ then the other frequencies areView Solution
- 9A source of sound of frequency $600 Hz$ is placed inside water. The speed of sound in water is $1500 m/s$ and in air is $300 m/s.$ The frequency of sound recorded by an observer who is standing in air is .... $Hz$View Solution
- 10The fundamental frequency of a closed pipe is $220 Hz$. If $\frac{1}{4}$ of the pipe is filled with water, the frequency of the first overtone of the pipe now is ..... $Hz$View Solution