Question
A sound wave of wavelength 32cm enters the tube as shown in the figure Then the smallest radius ‘r’ so that a maximum of sound is heard at detector is
- 7 cm
- 14 cm
- 21 cm
- 28 cm
The correct answer is: 28 cm
Related Questions to study
Two stereo speakers are separated by a distance of 2.4 m A person stands at a distance of 3.2 m as shown directly in front of one of the speakers The frequencies in audible range for which the listener will hear a minimum sound intensity are (Speed of the sound in air is 320 ms-1 and n is order of minimum)
Two stereo speakers are separated by a distance of 2.4 m A person stands at a distance of 3.2 m as shown directly in front of one of the speakers The frequencies in audible range for which the listener will hear a minimum sound intensity are (Speed of the sound in air is 320 ms-1 and n is order of minimum)
In the given arrangement, if hanging mass will be changed by 4%, then percentage change in the wave speed in string will be
In the given arrangement, if hanging mass will be changed by 4%, then percentage change in the wave speed in string will be
A wave pulse on a string has the dimension at time 
is
A wave pulse on a string has the dimension at time is
A source S emitting sound of frequency 300Hz is fixed on block A which is attached to the free end of a spring SA as shown in figure The dectector D fixed on block B attached to free end of spring SB detects this sound The blocks A and B are simultaneously displaced towards each other through a distance of 1.0m and then left to vibrate The maximum and minimum frequencies of sound detected by D, if the vibrational frequency of each block is 2Hz are (Velocity of sound v = 340m/s)
A source S emitting sound of frequency 300Hz is fixed on block A which is attached to the free end of a spring SA as shown in figure The dectector D fixed on block B attached to free end of spring SB detects this sound The blocks A and B are simultaneously displaced towards each other through a distance of 1.0m and then left to vibrate The maximum and minimum frequencies of sound detected by D, if the vibrational frequency of each block is 2Hz are (Velocity of sound v = 340m/s)
Sound signal is sent through a composite tube as shown in figure The radius of the semicircle is r Speed of sound in air is V The source of sound is capable to generate frequencies in the range 
If n is an integer then frequency for maximum intensity is given by
Sound signal is sent through a composite tube as shown in figure The radius of the semicircle is r Speed of sound in air is V The source of sound is capable to generate frequencies in the range If n is an integer then frequency for maximum intensity is given by
A transverse wave is passing through a light string shown in the figure The equation of wave is 
The area of crosssection of string is A and density is ρ The hanging mass is
A transverse wave is passing through a light string shown in the figure The equation of wave is The area of crosssection of string is A and density is ρ The hanging mass is
A wave pulse on a string has the dimension shown in figure The wave speed is 
If point O is a free end The shape of wave at time is
A wave pulse on a string has the dimension shown in figure The wave speed is If point O is a free end The shape of wave at time is
The radius of an electron orbit in a hydrogen atom is of the order of
The radius of an electron orbit in a hydrogen atom is of the order of
A nucleus of an element 
emits an 
-particle first, a 
-particle next and then a gamma photon. The final nucleus formed has an atomic number
A nucleus of an element emits an -particle first, a -particle next and then a gamma photon. The final nucleus formed has an atomic number
Orbital acceleration of electron is
Orbital acceleration of electron is
Neutrino emission in 
was predicted theoretically by
Neutrino emission in was predicted theoretically by
Which can pass through thickness of the steel
Which can pass through thickness of the steel
The kinetic energy of the electron in an orbit of radius in hydrogen atom is (e = electronic charge)
The kinetic energy of the electron in an orbit of radius in hydrogen atom is (e = electronic charge)
Atom bomb consists of two pieces of 
and a source of
Atom bomb consists of two pieces of and a source of
What fraction of a radioactive material will get disintegrated in a period of two half-lives
What fraction of a radioactive material will get disintegrated in a period of two half-lives
