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The intensity level of two sounds are 100 dB and 50 dB. What is the ratio of their intensities ?
07
Nov
The intensity level of two sounds are 100 dB and 50 dB. What is the ratio of their intensities ? The intensity level of two sounds are 100 dB and 50 dB. What is the ratio of their intensities ? November 7, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
In expressing sound intensity, we take 10^-12 W/m^2 as the reference level. For ordinary conversation, the intensity level is about 10^-6 W/m^2. Expressed in decibel, this is
07
Nov
In expressing sound intensity, we take 10^-12 W/m^2 as the reference level. For ordinary conversation, the intensity level is about 10^-6 W/m^2. Expressed in decibel, this is In expressing sound intensity the intensity level is about 10^-6 W/m^2. Expressed in decibel this is we take 10^-12 W/m^2 as the reference level. For ordinary conversation November [...]
A stationary observer receives sound waves from two tuning forks, one of which approaches and the other recedes with the same velocity. As this takes place, the observer hears
07
Nov
A stationary observer receives sound waves from two tuning forks, one of which approaches and the other recedes with the same velocity. As this takes place, the observer hears A stationary observer receives sound waves from two tuning forks one of which approaches and the other recedes with the same velocity. As this takes place [...]
A travelling harmonic wave is represented by the equation y(x,t) = 10^-3 sin (50t + 2x) , where x and y are in meter and t is in seconds. Which of the following is a correct statement about the wave ?
07
Nov
A travelling harmonic wave is represented by the equation y(x,t) = 10^-3 sin (50t + 2x) , where x and y are in meter and t is in seconds. Which of the following is a correct statement about the wave ? A travelling harmonic wave is represented by the equation y(x t) = 10^-3 sin [...]
A person standing on an open ground hears the sound of a jet aeroplane , coming from north at an angle 60^∘ with ground level ,But he finds the aeroplane right vertically above his position , if V is the speed of sound , speed of the plane is :
07
Nov
A person standing on an open ground hears the sound of a jet aeroplane , coming from north at an angle 60^∘ with ground level ,But he finds the aeroplane right vertically above his position , if V is the speed of sound , speed of the plane is : A person standing on an [...]
Equation of travelling wave on a stretched string of linear density 5 g/m is y = 0.03 sin(450 t – 9x) where distance and time are measured is SI units. The tension in the string is :
07
Nov
Equation of travelling wave on a stretched string of linear density 5 g/m is y = 0.03 sin(450 t – 9x) where distance and time are measured is SI units. The tension in the string is : Equation of travelling wave on a stretched string of linear density 5 g/m is y = 0.03 sin(450 [...]
A closed organ pipe has a fundamental frequency of 1.5 kHz. The number of overtones that can be distinctly heard by a person with this organ pipe will be : (Assume that the highest frequency a person can hear is 20,000 Hz)
07
Nov
A closed organ pipe has a fundamental frequency of 1.5 kHz. The number of overtones that can be distinctly heard by a person with this organ pipe will be : (Assume that the highest frequency a person can hear is 20,000 Hz) A heavy ball of mass M is suspended from the ceiling of a [...]
A stationary source emits sound of frequency v = 1200 Hz. If a wind blows at the speed of 0.1c, deduce (a) the percentage change in the wavelength and (b) the change in the
07
Nov
A stationary source emits sound of frequency v = 1200 Hz. If a wind blows at the speed of 0.1c, deduce (a) the percentage change in the wavelength and (b) the change in the A stationary source emits sound of frequency v = 1200 Hz. If a wind blows at the speed of 0.1c deduce [...]
A string of length 1 m and mass 5 g is fixed at both ends. The tension in the string is 8.0 N. The siring is set into vibration using an external vibrator of frequency 100 Hz. The separation between successive nodes on the string is close to
07
Nov
A string of length 1 m and mass 5 g is fixed at both ends. The tension in the string is 8.0 N. The siring is set into vibration using an external vibrator of frequency 100 Hz. The separation between successive nodes on the string is close to A heavy ball of mass M is [...]
A source of sound of frequency 1000 Hz moves to the right with a speed of 32 m/s relative to the ground. To its right there is a reflecting surface moving to the left with a speed
07
Nov
A source of sound of frequency 1000 Hz moves to the right with a speed of 32 m/s relative to the ground. To its right there is a reflecting surface moving to the left with a speed A source of sound of frequency 1000 Hz moves to the right with a speed of 32 m/s [...]