Chapter 16 – Waves
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A source of sound S emitting waves of frequency 100 Hz and an observer O are located at some distance from each other. The source is moving with a speed of 19.4ms^−1 at an angle of 60 with the source observer line as shown in the figure. The observer is at rest. The apparent frequency observed by the observer is: (velocity of sound in air 330ms^−1)
31
Aug
A source of sound S emitting waves of frequency 100 Hz and an observer O are located at some distance from each other. The source is moving with a speed of 19.4ms^−1 at an angle of 60 with the source observer line as shown in the figure. The observer is at rest. The apparent frequency [...]
Three sound waves of equal amplitudes have frequencies (n − 1),n, (n + 1). They superimpose to give beats. The number of beats produced per second will be.
31
Aug
Three sound waves of equal amplitudes have frequencies (n − 1),n, (n + 1). They superimpose to give beats. The number of beats produced per second will be. (n + 1). They superimpose to give beats. The number of beats produced per second will be. n Three sound waves of equal amplitudes have frequencies (n [...]
A siren emitting a sound of frequency 800Hz moves away from an observer towards a cliff at a speed of 15ms^−1. Then, the frequency of sound that the observer hears in the echo reflected from the cliff is (Take velocity of sound in air = 330ms^−1)
31
Aug
A siren emitting a sound of frequency 800Hz moves away from an observer towards a cliff at a speed of 15ms^−1. Then, the frequency of sound that the observer hears in the echo reflected from the cliff is (Take velocity of sound in air = 330ms^−1) A siren emitting a sound of frequency 800Hz moves [...]
Two car moving in opposite directions approach each other with speed of 22m/s and 16.5m/s respectively. The driver of the first car blows a horn having a frequency 400 Hz. The frequency heard by the driver of the second car is [velocity of sound 340m/s].
31
Aug
Two car moving in opposite directions approach each other with speed of 22m/s and 16.5m/s respectively. The driver of the first car blows a horn having a frequency 400 Hz. The frequency heard by the driver of the second car is [velocity of sound 340m/s]. The period of oscillation of a mass M suspended from [...]
A stretched string resonates with tuning fork frequency 512 Hz when length of the string is 0.5 m. The length of the string required to vibrate resonantly with a tuning fork of frequency 256 Hz would be
26
Aug
A stretched string resonates with tuning fork frequency 512 Hz when length of the string is 0.5 m. The length of the string required to vibrate resonantly with a tuning fork of frequency 256 Hz would be The velocity of sound in any gas depends upon August 26, 2020 Category: Chapter 16 - Waves , [...]
A wave of frequency 100 Hz travels along a string towards its fixed end. When this wave travels back, after reflection, a node is formed at a distance of 10 cm from the fixed end. The speed of the wave (incident and reflected) is
26
Aug
A wave of frequency 100 Hz travels along a string towards its fixed end. When this wave travels back, after reflection, a node is formed at a distance of 10 cm from the fixed end. The speed of the wave (incident and reflected) is a node is formed at a distance of 10 cm from [...]
Standing waves are produced in 10 m long stretched wire. If the wire vibrates in 5 segments and wave velocity is 20 m/s, then the frequency is
26
Aug
Standing waves are produced in 10 m long stretched wire. If the wire vibrates in 5 segments and wave velocity is 20 m/s, then the frequency is Standing waves are produced in 10 m long stretched wire. If the wire vibrates in 5 segments and wave velocity is 20 m/s then the frequency is August [...]
A pulse or a wave train travels along a stretched string and reaches the fixed end of the string. It will be reflected back with:
26
Aug
A pulse or a wave train travels along a stretched string and reaches the fixed end of the string. It will be reflected back with: A pulse or a wave train travels along a stretched string and reaches the fixed end of the string. It will be reflected back with: August 26, 2020 Category: Chapter [...]
A sonometer wire when vibrated in full length has frequency n. Now, it is divided by the help of bridges into a number of segments of lengths l1,l2,l3… when vibration these segments have frequencies n1,n2,n3,,, Then, the correct relation is
26
Aug
A sonometer wire when vibrated in full length has frequency n. Now, it is divided by the help of bridges into a number of segments of lengths l1,l2,l3… when vibration these segments have frequencies n1,n2,n3,,, Then, the correct relation is A sonometer wire when vibrated in full length has frequency n. Now it is divided [...]
The velocity of sound in any gas depends upon
26
Aug
The velocity of sound in any gas depends upon The velocity of sound in any gas depends upon August 26, 2020 Category: Chapter 16 - Waves , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,