Physics-
General
Easy
Question
Fig. below shows the wave 
at any instant travelling in the +ve x-direction. What is the slope of the curve at B
The correct answer is:
The particle velocity is maximum at B and is given by 
Also wave velocity is 
So slope 
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The figure shows four progressive waves A, B, C, and D with their phases expressed with respect to the wave A. It can be concluded from the figure that
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Physics-General
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Physics-General
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II) The medium at 
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Physics-General
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Vibrating tuning fork of frequency n is placed near the open end of a long cylindrical tube. The tube has a side opening and is fitted with a movable reflecting piston. As the piston is moved through 8.75 cm, the intensity of sound changes from a maximum to minimum. If the speed of sound is 350 m/s. Then n is
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Physics-General
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Two loudspeakers L1 and L2 driven by a common oscillator and amplifier, are arranged as shown. The frequency of the oscillator is gradually increased from zero and the detector at D records a series of maxima and minima. If the speed of sound is 330 ms–1 then the frequency at which the first maximum is observed is
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Physics-General
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A train has just complicated a U-curve in a track which is a semicircle. The engine is at the forward end of the semi circular part of the track while the last carriage is at the rear end of the semicircular track. The driver blows a whistle of frequency 200 Hz. Velocity of sound is 340 m/sec. Then the apparent frequency as observed by a passenger in the middle of a train when the speed of the train is 30 m/sec is
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Physics-General
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Physics-General
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Figure below shows a body of mass M moving with the uniform speed on a circular path of radius, R. What is the change in acceleration in going from 
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Physics-General
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A metal sphere is hung by a string fixed to a wall. The sphere is pushed away from the wall by a stick. The forces acting on the sphere are shown in the second diagram. Which of the following statements is wrong
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Find the resultant of three vectors 
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Physics-General
Chemistry-
of KOH solution was titrated with 0.20 M 
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The concentration of the KOH solution was
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Chemistry-General
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Following experiment has been given to identify isomer. Read the Experiment and answer the questions
A compound
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or (en) and is optically inactive .A second form reacts with but not with (en) and is optically active and reacts with both and (en), complexes are
First form of the complex is
Following experiment has been given to identify isomer. Read the Experiment and answer the questions
A compound has been prepared in a number of isomeric forms. One form undergoes no reaction with or (en) and is optically inactive .A second form reacts with but not with (en) and is optically active and reacts with both and (en), complexes are
First form of the complex is
Chemistry-General
Chemistry-
Tautomerism is the phenomenon in which two structural isomers differing in the relative positions of their atoms are spontaneously interconvertable and can exist in dynamic equilibrium. The two forms in tautomeric equilibrium are called tautomers of each other. The interconvertibility of tautomers is a chemical reaction which involves making and braking of bonds. Tautomers are true isomers, and either of the individual tautomeric forms may be isolated
In the keto-enoltautomerism of dicarbonyl compounds the enol form is preferred in contrast to the keto form, this is due to
Tautomerism is the phenomenon in which two structural isomers differing in the relative positions of their atoms are spontaneously interconvertable and can exist in dynamic equilibrium. The two forms in tautomeric equilibrium are called tautomers of each other. The interconvertibility of tautomers is a chemical reaction which involves making and braking of bonds. Tautomers are true isomers, and either of the individual tautomeric forms may be isolated
In the keto-enoltautomerism of dicarbonyl compounds the enol form is preferred in contrast to the keto form, this is due to
Chemistry-General
