Volume 1
When an observer moves toward a stationary source with a certain velocity, he observers an apparent frequency f. When it moves away from the source with same velocity, the observed frequency is 0.8 f. If the velocity of sound is v, then the speed of the observer is
05
Nov
When an observer moves toward a stationary source with a certain velocity, he observers an apparent frequency f. When it moves away from the source with same velocity, the observed frequency is 0.8 f. If the velocity of sound is v, then the speed of the observer is he observers an apparent frequency f. When [...]
When two tuning forks A and B are sounded together x beats/s are heard. Frequency A is n. Now when one prong of B is loaded with a little wax, the number of beats/s decreases. The frequency of fork B is
05
Nov
When two tuning forks A and B are sounded together x beats/s are heard. Frequency A is n. Now when one prong of B is loaded with a little wax, the number of beats/s decreases. The frequency of fork B is the number of beats/s decreases. The frequency of fork B is When two tuning [...]
A tuning fork of frequency 480 Hz produces 10 beats/s when sounded with a vibrating sonometer string. What must have been the frequency of the string if a slight increase in tension produces fewer beats per second than before?
05
Nov
A tuning fork of frequency 480 Hz produces 10 beats/s when sounded with a vibrating sonometer string. What must have been the frequency of the string if a slight increase in tension produces fewer beats per second than before? the velocity of the sound in gas is Two sound waves of wavelengths 1 m and [...]
The frequency of a whistle is 300 Hz. It is approaching towards a stationary observer with a speed 1/3 of the speed of sound. The frequency of sound as heard by the observer will be
05
Nov
The frequency of a whistle is 300 Hz. It is approaching towards a stationary observer with a speed 1/3 of the speed of sound. The frequency of sound as heard by the observer will be The frequency of a whistle is 300 Hz. It is approaching towards a stationary observer with a speed 1/3 of [...]
Two sound waves of wavelengths 1 m and 1.01 m produce 10 beats in 3 seconds. Then, the velocity of the sound in gas is
05
Nov
Two sound waves of wavelengths 1 m and 1.01 m produce 10 beats in 3 seconds. Then, the velocity of the sound in gas is the velocity of the sound in gas is Two sound waves of wavelengths 1 m and 1.01 m produce 10 beats in 3 seconds. Then November 5, 2020 Category: Arihant [...]
A locomotive engine approaches a railway station and whistles at a frequency of 400 Hz. A stationary observer on the platform observes a change of 40 Hz as the engine passes across him. If the velocity if sound is 340 m/s, the speed of the engine is
05
Nov
A locomotive engine approaches a railway station and whistles at a frequency of 400 Hz. A stationary observer on the platform observes a change of 40 Hz as the engine passes across him. If the velocity if sound is 340 m/s, the speed of the engine is If a particle is travelling with a speed [...]
Following two wave trains are approaching each other. y1 = a sin 2000 π t y2 = a sin 2008 π t The number of beats heard per second is :
05
Nov
Following two wave trains are approaching each other. y1 = a sin 2000 π t y2 = a sin 2008 π t The number of beats heard per second is : Following two wave trains are approaching each other. y1 = a sin 2000 π t y2 = a sin 2008 π t The number [...]
If a particle is travelling with a speed of 0.9 of the speed of sound and is emitting radiations of frequency 1 kHz and moving towards the observer, what is its apparent frequency (in kHz) ?
05
Nov
If a particle is travelling with a speed of 0.9 of the speed of sound and is emitting radiations of frequency 1 kHz and moving towards the observer, what is its apparent frequency (in kHz) ? If a particle is travelling with a speed of 0.9 of the speed of sound and is emitting radiations [...]
λ1 = 100 cm, λ2 = 90 cm and velocity of sound = 396 m/s. The number beats (in Hz) are
05
Nov
λ1 = 100 cm, λ2 = 90 cm and velocity of sound = 396 m/s. The number beats (in Hz) are λ1 = 100 cm λ2 = 90 cm and velocity of sound = 396 m/s. The number beats (in Hz) are November 5, 2020 Category: Arihant Physics by D.C Pandey , Chapter 16 - [...]
Two identical stringed instruments have frequency 100 Hz. If tension in one of them is increased by 4% and they are sounded together, then number of beats in one second is :
05
Nov
Two identical stringed instruments have frequency 100 Hz. If tension in one of them is increased by 4% and they are sounded together, then number of beats in one second is : then number of beats in one second is : Two identical stringed instruments have frequency 100 Hz. If tension in one of them [...]