Which of the following actions would most effectively reduce reverberation in a large auditorium?
Installing curtains and carpets throughout the space
Reverberation is the persistence of sound due to repeated reflections from walls, ceiling and floor.
It is reduced by covering these surfaces with sound-absorbing materials such as heavy curtains, carpets and fibre boards.
Ordinary paint does not absorb sound, removing seats reduces absorption, and more loudspeakers only add sound.
Hence, the answer is installing curtains and carpets throughout the space.
Which of the following sounds has the lowest pitch?
Which of the following changes will most likely reduce the clarity of an echo in a large room?
If two sounds have the same frequency but different amplitudes, what will be different?
Which of the following statements best explains why sound can NOT travel through a vacuum?
When a tuning fork vibrates and produces sound, what type of waves is created in the air?
Which of the following conditions is necessary to hear an echo clearly?
What is the role of a medium in the propagation of sound?
Why can humans NOT hear the sound produced by a bat?
Which of the following statements best explains why striking a bell in a vacuum does NOT produce sound we can hear?
Which pair of changes will increase both the loudness and the pitch of a sound produced by a guitar string?
Which of the following is related to Doppler effect?
The position of a particle in one dimension changes in discrete steps. With each step it moves to the right, however, the length of the step is drawn from a uniform distribution from the interval \(\left[ {{\rm{λ }}\,{\rm{ - }}\,\frac{{\rm{1}}}{{\rm{2}}}{\rm{w,}}\,{\rm{λ }}\,{\rm{ + }}\,\frac{{\rm{1}}}{{\rm{2}}}{\rm{w}}} \right] \) , where λ and w are positive constants. If X denotes the distance from the starting point after N steps, the standard deviation \(\sqrt {\left\langle {{X^2}} \right\rangle \, - {{\left\langle X \right\rangle }^2}} \) for large values of N is
A particle of mass m in one dimension is in the ground state of a simple harmonic oscillator described by a Hamiltonian \(\frac{{{{\rm{P}}^{\rm{2}}}}}{{{\rm{2m}}}}{\rm{ + }}\frac{{\rm{1}}}{{\rm{2}}}{\rm{m}}{{\rm{\omega }}^{\rm{2}}}{{\rm{x}}^{\rm{2}}} \) in the standard notation. An impulsive force at time t = 0 suddenly imparts a momentum P0 = \(\sqrt {{\rm{hm\omega }}} \) to it. The probability that the particle remains in the original ground state is
In an elastic scattering process at an energy E, the phase shifts satisfy δ 0 ≈ 30°, δ 1≈ 10°, while the other phase shifts are zero. The polar angle at which the differential cross-section peaks is closest to