Physics

Two closed pipe produce 10 beats per second when emitting their fundamental nodes. If their length are in ratio of 25 : 26. Then their fundamental frequency in Hz , are are Two closed pipe produce 10 beats per second when emitting their fundamental nodes. If their length are in ratio of 25 : 26. [...]

A tuning fork when sound together with a tuning fork of frequency 256 emits two two beats. On loading the tuning fork of frequency 256, the number of beats heard is 1 per second. The frequency of unknown tuning fork is A tuning fork when sound together with a tuning fork of frequency 256 emits [...]

A source of sound of frequency 600 Hz is placed inside water. The speed of sound in water is 1500 m/s and in air it is 300 m/s. The frequency of sound recorded by an observer who is standing in air is? he observers an apparent frequency f. When it moves away from the source [...]

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 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? 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 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 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 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 : Following two wave trains are approaching each other. y1 = a sin 2000 π t y2 = a sin 2008 π t The number [...]