Arihant Physics by D.C Pandey

Intensity level of intensity l is 30 dB. The ratio I/I0 is (where I0 is the threshold of hearing) Intensity level of intensity l is 30 dB. The ratio I/I0 is (where I0 is the threshold of hearing) November 1, 2020 Category: Arihant Physics by D.C Pandey , Chapter 16 - Waves , Volume 1 [...]

If frequency of sound produced by a siren increases from 400 to 1200 Hz while the wave amplitude remains constant, the ratio of intensity of the 1200 Hz to that of 400 Hz wave will If frequency of sound produced by a siren increases from 400 to 1200 Hz while the wave amplitude remains constant [...]

Two strings A and B have lengths lA ​and lB ​ carry masses MA and MB at their lower ends the upper ends being supported by rigid supports. If nA and nB are the fundamental frequencies of their vibration, then nA : nB is A stationary wave set up on a string have the equation [...]

A stationary wave set up on a string have the equation y = (2mm) sin [(6.25 m^-1) x cos (ωt)]. This stationary wave is created by two identical waves, of amplitude A each moving in opposite directions along the string. Then A stationary wave set up on a string have the equation y = (2mm) [...]

In order to double the frequency of the fundamental note emitted by a stretched string, the length is reduced to 3/4th of the original length and the tension is changed. The factor by which the tension is to be changed is In order to double the frequency of the fundamental note emitted by a stretched [...]

If you set up the ninth harmonic on a string fixed at both ends, its frequency compared to the seventh harmonic is If you set up the ninth harmonic on a string fixed at both ends its frequency compared to the seventh harmonic is November 1, 2020 Category: Arihant Physics by D.C Pandey , Chapter [...]

A 1 cm long string vibrates with fundamental frequency of 256 Hz . If the length is reduced to 1/4 cm keeping the tension unaltered, the new fundamental frequency will be (in Hz) A 1 cm long string vibrates with fundamental frequency of 256 Hz . If the length is reduced to 1/4 cm keeping [...]

Consider the three waves z1 z2 and z3 as z1 = A sin (kx – ωt) z2 = A sin (kx + ωt) z3 = A sin (ky – ωt) Which of the following represents a standing wave? Consider the three waves z1 z2 and z3 as z1 = A sin (kx – ωt) z2 [...]

Stationary waves of frequency 300Hz are formed in a medium in which the velocity of sound is 1200 metre/sec. The distance between a node and the neighbouring antinode is Stationary waves of frequency 300Hz are formed in a medium in which the velocity of sound is 1200 metre/sec. The distance between a node and the [...]

First overtone frequency of a closed organ pipe is equal to the first overtone frequency of an open organ pipe. Further nth harmonic of closed organ pipe is also equal to the nth harmonic of open pipe, where n and m are First overtone frequency of a closed organ pipe is equal to the first [...]