Physics-
General
Easy
Question
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
The correct answer 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 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:
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The energy of the electron in the first orbit of 
is 
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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 
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, 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
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Two tuning forks P and Q are vibrated together The number of beats produced are represented by the straight line OA in the following graph After loading Q with wax again these are vibrated together and the beats produced are represented by the line OB If the frequency of P is 341 Hz, the frequency of Q will be ___
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AB is a cylinder of length 1m fitted with a thin flexible diaphragm C at middle and two other thin flexible diaphragms A and B at the ends as shown The portions AC and BC contain hydrogen and oxygen gases respectively The diaphragms A and B are set into vibrations of the same frequency The minimum frequency of these vibrations for which diaphragm C is a node is (Under the conditions of the experiment the velocity of sound in hydrogen is 1100 m/s and oxygen 300 m/s)
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Ground state electronic configuration of nitrogen atom can be represented by:
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2 
3 
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1
2
3
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A rod PQ of length ‘L’ is hung from two identical wires A and B A block of mass ‘m’ is hung at point R of the rod as shown in figure The value of ‘x’ so that the fundamental mode in wire A is in resonance with first overtone of B is
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The length of the wire shown in figure between the pulley is 1.5m and its mass is 12 gm Find the frequency of vibration with which the wire vibrates in two loops leaving the middle point of the wire between the pulleys at rest
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physics-General
