Physics-
General
Easy
Question
A detector is moving in a circular path of radius r in anticlock wise direction with a constant angular velocity 
as shown in the figure At time t=0, it starts from the location shown at A, assuming source at rest The time interval between minimum and maximum frequency as received by the detector
The correct answer is:
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A detector is moving in a circular path of radius r in anticlock wise direction with a constant angular velocity as shown in the figure At time t=0, it starts from the location shown at A, assuming source at rest The time at which the detector will hear the maximum frequency for the 1st time
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A detector is moving in a circular path of radius r in anticlock wise direction with a constant angular velocity as shown in the figure At time t=0, it starts from the location shown at A, assuming source at rest The frequency as received by the detector when it rotates by an angle 
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Two speakers 
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Two speakers driven by the same amplifiers are placed at y=1m and y=-1m The speakers vibrate in phase at 600 Hz A man stands at a point on x-axis at a very large distance form the origin and starts moving parallel to y-axis The speed of sound in air is 330 m/s If he continous to walk along the same line how many more maxima can he hear
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Two speakers driven by the same amplifiers are placed at y=1m and y=-1m The speakers vibrate in phase at 600 Hz A man stands at a point on x-axis at a very large distance form the origin and starts moving parallel to y-axis The speed of sound in air is 330 m/s The angle θ at which he will hear maximum intensity for first time?
Two speakers driven by the same amplifiers are placed at y=1m and y=-1m The speakers vibrate in phase at 600 Hz A man stands at a point on x-axis at a very large distance form the origin and starts moving parallel to y-axis The speed of sound in air is 330 m/s The angle θ at which he will hear maximum intensity for first time?
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Two speakers driven by the same amplifiers are placed at y=1m and y=-1m The speakers vibrate in phase at 600 Hz A man stands at a point on x-axis at a very large distance form the origin and starts moving parallel to y-axis The speed of sound in air is 330 m/s The angle θ at which intensity of sound drop to a minimum for the first time
Two speakers driven by the same amplifiers are placed at y=1m and y=-1m The speakers vibrate in phase at 600 Hz A man stands at a point on x-axis at a very large distance form the origin and starts moving parallel to y-axis The speed of sound in air is 330 m/s The angle θ at which intensity of sound drop to a minimum for the first time
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When a composite wire is made by joining two wires as shown in figure and possible frequencies of this wire is asked (both ends fixed) then the lowest frequency is that at which individual lowest frequencies of the two wires are equal 
The lowest frequency such that the junction is an antinode is
When a composite wire is made by joining two wires as shown in figure and possible frequencies of this wire is asked (both ends fixed) then the lowest frequency is that at which individual lowest frequencies of the two wires are equal The lowest frequency such that the junction is an antinode is
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When a composite wire is made by joining two wires as shown in figure and possible frequencies of this wire is asked (both ends fixed) then the lowest frequency is that at which individual lowest frequencies of the two wires are equal The lowest frequency such that the junction is a node is
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The mass of neutron is of the order of:
The mass of neutron is of the order of:
chemistry-General
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The energy of the electron in the first orbit of 
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The energy of the election in the first orbit of hydrogen would be:
The energy of the electron in the first orbit of is The energy of the election in the first orbit of hydrogen would be:
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A heavy but uniform rope of length L is suspended from a ceiling A particle is dropped from the ceiling at the same instant the bottom end is given the jerk where will the particle meet the pulse measured from bottom?
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A heavy but uniform rope of length L is suspended from a ceiling Find the velocity of transverse wave travelling on the string as a funcition of the distance(x) from the lower end
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IUPAC name of the following compound is
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IUPAC name of the following compound is
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A train A crosses a station with a speed of 40 m/s and whistles a short pulse of natural frequency 
Another train B is approaching towards the same station with the same speed along a parallel track Two tracks are d = 99m apart When train A whistles, train B is 152m away from the station as shown in fig If velocity of sound in air 
, calculate frequency of the pulse heard by driver of train B
A train A crosses a station with a speed of 40 m/s and whistles a short pulse of natural frequency Another train B is approaching towards the same station with the same speed along a parallel track Two tracks are d = 99m apart When train A whistles, train B is 152m away from the station as shown in fig If velocity of sound in air , calculate frequency of the pulse heard by driver of train B
physics-General
