Question Answers
Sahay Sir > Question Answers
When two tuning forks (fork 1 and fork 2) are sounded simultaneously, 4 beats per second are heard. Now, some tape is attached on the prong of the fork 2. When the tuning forks are sounded again, 6 beats per second are heard. If the frequency of fork 1 is 200 Hz, then what was the original frequency of fork 2?
07
Nov
When two tuning forks (fork 1 and fork 2) are sounded simultaneously, 4 beats per second are heard. Now, some tape is attached on the prong of the fork 2. When the tuning forks are sounded again, 6 beats per second are heard. If the frequency of fork 1 is 200 Hz, then what was [...]
Posted in:
Chapter 10 - Oscillation and Waves
,
JEE Mains Physics 2002-2019 Solved Video Solutions
,
Tags:
4 beats per second are heard. Now ,
6 beats per second are heard. If the frequency of fork 1 is 200 Hz ,
some tape is attached on the prong of the fork 2. When the tuning forks are sounded again ,
then what was the original frequency of fork 2? ,
When two tuning forks (fork 1 and fork 2) are sounded simultaneously ,
The figure shows an arrangement of identical metal plates placed parallel to each other. The diagram also shows the variation of potential between the plates. Using the details given in the diagram, the equivalent capacitance connected across the battery is given as . Find x : (separation between the consecutive plates is equal to l and the cross-sectional area of each plate is A).
07
Nov
The figure shows an arrangement of identical metal plates placed parallel to each other. The diagram also shows the variation of potential between the plates. Using the details given in the diagram, the equivalent capacitance connected across the battery is given as . Find x : (separation between the consecutive plates is equal to l [...]
Tags:
the equivalent capacitance connected across the battery is given as . Find x : (separation between the consecutive plates is equal to l and the cross-sectional area of each plate is A). ,
The figure shows an arrangement of identical metal plates placed parallel to each other. The diagram also shows the variation of potential between the plates. Using the details given in the diagram ,
An observer moves towards a stationary source of sound, with a velocity one-fifth of the velocity of sound. What is the percentage increase in the apparent frequency?
07
Nov
An observer moves towards a stationary source of sound, with a velocity one-fifth of the velocity of sound. What is the percentage increase in the apparent frequency? An observer moves towards a stationary source of sound with a velocity one-fifth of the velocity of sound. What is the percentage increase in the apparent frequency? November [...]
Two sources A and B are sounding notes of frequency 680 Hz. A listener moves from A to B with a constant velocity u. If the speed of sound is 340 m/s, what must be the value
07
Nov
Two sources A and B are sounding notes of frequency 680 Hz. A listener moves from A to B with a constant velocity u. If the speed of sound is 340 m/s, what must be the value Two sources A and B are sounding notes of frequency 680 Hz. A listener moves from A to [...]
The intensity of gamma radiation from a given source is l. On passing through 36 mm of lead, it is reduced to l/8. The thickness of lead which will reduce the intensity to l/2 will be:
07
Nov
The intensity of gamma radiation from a given source is l. On passing through 36 mm of lead, it is reduced to l/8. The thickness of lead which will reduce the intensity to l/2 will be: it is reduced to l/8. The thickness of lead which will reduce the intensity to l/2 will be: The [...]
A whistle producing sound waves of frequencies 9500 Hz and above is approaching a stationary person with speed v ms^−1. the velocity of sound in air is 300 ms^−1. If the person hear frequencies up to a maximum of 10000 Hz, the maximum values of v up to which he can hear the whistle is
07
Nov
A whistle producing sound waves of frequencies 9500 Hz and above is approaching a stationary person with speed v ms^−1. the velocity of sound in air is 300 ms^−1. If the person hear frequencies up to a maximum of 10000 Hz, the maximum values of v up to which he can hear the whistle is [...]
Two factories are sounding their sirens at 800 Hz. A man goes from one factory to the other at a speed of 2 m/s. The velocity of sound is 320 m/s. The number of beats heard
07
Nov
Two factories are sounding their sirens at 800 Hz. A man goes from one factory to the other at a speed of 2 m/s. The velocity of sound is 320 m/s. The number of beats heard Two factories are sounding their sirens at 800 Hz. A man goes from one factory to the other at [...]
The intensity of a sound wave gets reduced by 20% on passing through a slab. The reduction in intensity on passage through two such consecutive slabs is
07
Nov
The intensity of a sound wave gets reduced by 20% on passing through a slab. The reduction in intensity on passage through two such consecutive slabs is The intensity of a sound wave gets reduced by 20% on passing through a slab. The reduction in intensity on passage through two such consecutive slabs is November [...]
A sound absorber attenuates the sound level by 20 dB. The intensity decreases by a factor of
07
Nov
A sound absorber attenuates the sound level by 20 dB. The intensity decreases by a factor of A sound absorber attenuates the sound level by 20 dB. The intensity decreases by a factor of November 7, 2020 Category: Chapter 10 - Oscillation and Waves , JEE Mains Physics 2002-2019 Solved Video Solutions ,
A man is watching two trains, one leaving and the other coming in with equal speed of 4 m/s. If they sound their whistles, each of frequency 240 Hz, the number of beats heard
07
Nov
A man is watching two trains, one leaving and the other coming in with equal speed of 4 m/s. If they sound their whistles, each of frequency 240 Hz, the number of beats heard A man is watching two trains each of frequency 240 Hz one leaving and the other coming in with equal speed [...]