Which of the following best describes an echo in the context of sound propagation and reflection?
An echo is a reflected sound heard distinctly after the original sound.
An echo is the distinct reflected sound heard after the original sound, once it bounces off a distant, hard surface with a noticeable time delay. Hence, the correct answer is An echo is a reflected sound heard distinctly after the original sound.
Similar Questions
Which of the following statements is/are true about the loudness and softness of a sound wave?
(i) A loud sound has less amplitude as compared to a soft sound.
(ii) A loud sound has more energy associated with it as compared to a soft sound.
(iii) The loudness of a sound wave is the measure of the response of the ear to the sound.
Which of the following sounds has the lowest pitch?
Why are ultrasound waves used for cleaning delicate objects such as jewelry?
A student beats a large drum and blows a high-pitched plastic whistle at the same time. Which property of the sound waves is the main reason why the whistle sounds so different from the drum?
Which of the following statements best explains why striking a bell in a vacuum does NOT produce sound we can hear?
Which of the following features is unique to longitudinal sound waves?
A certain sound wave has a frequency of 400 Hz. What is the time period for this wave?
Why does a tightly stretched drum skin make a different sound than a loose one?
If two notes are played, one at 300 Hz and the other at 600 Hz, how do their pitches compare?
Which of the following best explains how ultrasound is used in medical imaging?
Important Questions from Waves
Which of the following is related to Doppler effect?
- The velocity v(x) of a particle moving in one dimension is given by v(x) = v 0 sin \(\rm\left(\frac{\pi x}{x_0}\right) \) , where v 0 and x 0 are positive constants of appropriate dimensions. If the particle is initially at x/x 0 = ϵ, where |ϵ| ≪ 1, then, in the long time, it
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
