Physics-
General
Easy
Question
Which one of the following is the Young’s modules (in 
for the wire having the stress-strain curve shown in the figure
The correct answer is:
Young’s modulus is defined only in elastic region and
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physics-
The diagram shows the change 
in the length of a thin uniform wire caused by the application of stress 
at two different temperatures 
and 
. The variation shown suggest that
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physics-General
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IfΔHf ofICl(g),Cl(g),andI(g)is17.57,121.34and 106.96Jmol–1respectively.Thenbonddissociation energyofIClbondis-
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Calculateenthalpychangeofthefollowingreaction H2C=CH2(g)+H2(g)→H3C–CH3(g) ThebondenergiesofC–H,C–C,C=C,H–Hare414, 347,615and435KJmol–1respectively-
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chemistry-General
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HeatevolvedinthereactionH2+Cl2 →2HClis 182KJ.BondenergiesofH–H and Cl–Clare430 and242KJ/mol respectively.The HCl bond energy is-
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chemistry-General
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Among the following for which reaction heat of reaction represents bond energy of HCl
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chemistry-General
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The range of a galvanometer of resistance G ohm is V wolt. The resistance required to be connected in series with it in order to convert it into voltmeter of range 
volt will be........
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physicsGeneral
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A galvanometer with resistance 100Ω is converted into an ammeter with a resistance of 0.1. The galvanometer shows full scale deflection with current of 100μA. Then what will be the minimum current in the circuit for fall scale deflection of galvanometer?
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physicsGeneral
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A galvanometer of resistance 200Ω gives full scale deflection for a current of 
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physicsGeneral
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A moving coil galvanometer has 150 equal divisions, Hs current sensitivity is 10 divisions per milliampere and voltage sensitivity is 2 divisions per millivolt. In order that each divisions reads 1 V . What will be the resistance in ohms needed to be connected in series with the coil?
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A battery of 2 V and internal resistance 1 is used to send a current through a potentiometer wire of length 200 cm and resistance What is the potential gradieut of the wire?
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physicsGeneral
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A potentiometer wire, which is 4 cm long is connected to the terminals of a battery of steady voltage A leclanche cell gives a nullpoint at 1 m if the length of the potentiometer wire be increased by 1 m, What is the new new position of the null point?
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physicsGeneral
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In experiment of the potentiometer wire AB of length 100 cm has a resistance of 10Ω, It is connected in series with a resistance R and a cell of emf 2 volts and of negligible internal resistance.A Source of emf 10mV is balanced against a length of of 40 cm the poteatio meter wire. What is the value of the external resistance?
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physicsGeneral
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If the deflection of the galvanometer is the same direction at both the ends of the potential meter wire, then point out the statement which is definitely not the possible reason for the.
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In the experiment of potentiometer wire AB is 100 cm long shown in figure When AC=40 cm , no deflection oocurs in the galvanometer. What is the value of R ?
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PhysicsGeneral
maths-
The area bounded between the parabola y2 = 4x and the line y = 2x – 4 is equal to
The area bounded between the parabola y2 = 4x and the line y = 2x – 4 is equal to
maths-General
