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A source of a sound is moving with constant velocity of 20 m/s emitting a note of frequency 1000 Hz. The ratio of frequencies observed by a stationary observer while the source is approaching him after it crosses him will be An organ pipe are Two closed pipe produce 10 beats per second when emitting [...]

A Certain electric field is given as E = -[(2xy +z^2 ) i + ( 2yz + x^2 ) j + ( 2 zx + y^2 ) k ] A Certain electric field is given as E = -[(2xy +z^2 ) i + ( 2yz + x^2 ) j + ( 2 zx + y^2 [...]

In a resonance tube experiment, the first two resonances are observed at length 10.5 cm and 29.5 cm. The third resonance is observed at the length ………………………… cm In a resonance tube experiment the first two resonances are observed at length 10.5 cm and 29.5 cm. The third resonance is observed at the length .............................. [...]

A resonance occurs with a tuning fork and an air column of size 12 cm. The next higher resonance occurs with an air column of 38 cm. What is the frequency of the tuning fork? A resonance occurs with a tuning fork and an air column of size 12 cm. The next higher resonance occurs [...]

Two canoes are 10 m apart on a lake. Each bobs up and down with a period of 4.0 s. When one canoe is at its highest point, the other canoe is at its lowest point. Both canoes the other canoe is at its lowest point. Both canoes Two canoes are 10 m apart on [...]

A solid conducting sphere of radius a is placed inside a conducting shell of ardius b so that both are concentric . Now, the shell is given a charge Q. Match the following. A solid conducting sphere of radius a is placed inside a conducting shell of ardius b so that both are concentric . [...]

A train of sound waves is propagated along an organ pipe and gets reflected from an open end. If the displacement amplitude of the waves (incident and reflected) are 0.002 cm, A train of sound waves is propagated along an organ pipe and gets reflected from an open end. If the displacement amplitude of the [...]

An organ pipe, open from both end produces 5 beats per second when vibrated with a source of frequency 200 Hz. The second harmonic of the same pipes produces 10beats per second with a source of frequency 420 Hz. The fundamental frequency of organ pipe is An organ pipe are Two closed pipe produce 10 [...]

Two identical stringent instruments have frequency 100 Hz. If tension is one of them is increased by 4% and they are sounded together then the number of beats in one second is Two identical stringent instruments have frequency 100 Hz. If tension is one of them is increased by 4% and they are sounded together [...]

A source of sound is travelling towards a stationary observe. The frequency of sound heard by the observer is of the three times of the original frequency. The velocity of sound is v m/s. The speed of source will be: are Two closed pipe produce 10 beats per second when emitting their fundamental nodes. If [...]