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A tuning fork of frequency 380 Hz is moving towards a wall with a velocity of 4 m/s. Then the number of beats heard by a stationary listener between direct and reflected sounds
07
Nov
A tuning fork of frequency 380 Hz is moving towards a wall with a velocity of 4 m/s. Then the number of beats heard by a stationary listener between direct and reflected sounds A tuning fork of frequency 380 Hz is moving towards a wall with a velocity of 4 m/s. Then the number of [...]
A pipe of length 85 cm is closed from one end. Find the number of possible natural oscillations of the air column in the pipe whose frequencies lie below 1250 Hz. The velocity of sound in air is 340 m/s.
07
Nov
A pipe of length 85 cm is closed from one end. Find the number of possible natural oscillations of the air column in the pipe whose frequencies lie below 1250 Hz. The velocity of sound in air is 340 m/s. A heavy ball of mass M is suspended from the ceiling of a car by [...]
In figure , plate A has 100 muC charge , while plate B has 60 muC charge. ( a) when both switches are open, then
07
Nov
In figure , plate A has 100 muC charge , while plate B has 60 muC charge. ( a) when both switches are open, then In figure plate A has 100 muC charge then while plate B has 60 muC charge. ( a) when both switches are open November 7, 2020 Category: Uncategorised (JEE Advanced [...]
Given figure represents the displacement y versus distance x along the direction of propagation of a longitudinal wave. The pressure is maximum at position marked
07
Nov
Given figure represents the displacement y versus distance x along the direction of propagation of a longitudinal wave. The pressure is maximum at position marked Given figure represents the displacement y versus distance x along the direction of propagation of a longitudinal wave. The pressure is maximum at position marked November 7, 2020 Category: Uncategorised [...]
A train is moving on a straight track with speed 20ms^−1. It is blowing its whistle at the frequency of 1000Hz. The percentage change in the frequency heard by a person standing near the track as the train passes him is (speed of sound =320ms^−1) close to :
07
Nov
A train is moving on a straight track with speed 20ms^−1. It is blowing its whistle at the frequency of 1000Hz. The percentage change in the frequency heard by a person standing near the track as the train passes him is (speed of sound =320ms^−1) close to : A heavy ball of mass M is [...]
An observer is moving with half the speed of light towards a stationary microwave source emitting waves at frequency 10 GHz. What is the frequency of the microwave measured by the observer? (speed of light =3×10^8 ms^−1 )
07
Nov
An observer is moving with half the speed of light towards a stationary microwave source emitting waves at frequency 10 GHz. What is the frequency of the microwave measured by the observer? (speed of light =3×10^8 ms^−1 ) A heavy ball of mass M is suspended from the ceiling of a car by a light [...]
A granite rod of 60 cm length is clamped at its middle point and is set into longitudinal vibrations. The density of granite is 2.7×10^3 kg/m^3 and its Young’s modulus is 9.27×10^10 Pa. What will be the fundamental frequency of the longitudinal vibrations ?
07
Nov
A granite rod of 60 cm length is clamped at its middle point and is set into longitudinal vibrations. The density of granite is 2.7×10^3 kg/m^3 and its Young’s modulus is 9.27×10^10 Pa. What will be the fundamental frequency of the longitudinal vibrations ? A heavy ball of mass M is suspended from the ceiling [...]
A resonance tube is old and has jagged end. It is still used in the laboratory to determine velocity of sound in air. A tuning fork of frequency 512Hz produces first resonance when the tube is filled with water to a mark 11cm below a reference mark, near the open end of the tube. The experiment is repeated with another fork of frequency 256Hz which produces first resonance when water reaches a mark 27cm below the reference mark. The velocity of sound in air, obtained in the experiment, is close to:
07
Nov
A resonance tube is old and has jagged end. It is still used in the laboratory to determine velocity of sound in air. A tuning fork of frequency 512Hz produces first resonance when the tube is filled with water to a mark 11cm below a reference mark, near the open end of the tube. The [...]
If the source is moving towards right, wavefront of sound waves get modified to
07
Nov
If the source is moving towards right, wavefront of sound waves get modified to If the source is moving towards right wavefront of sound waves get modified to November 7, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
When a person wears a hearing aid, the sound intensity level increases by 30 dB. The sound intensity increases by
07
Nov
When a person wears a hearing aid, the sound intensity level increases by 30 dB. The sound intensity increases by the sound intensity level increases by 30 dB. The sound intensity increases by When a person wears a hearing aid November 7, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,