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If A Wire Is Stretched To Make It 0.1% Longer, Its Resistance Will :
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A Filament Bulb (500 W, 100 V) Is To Be Used In A 230 V Main Supply. When A Resistance R Is Connected In Series, It Works Perfectly And The
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Two Positive Point Charges Of 12?c And 8?c Are 10 Cm Apart Each Other. The Work Done In Bringing Them 4cm Closer Is .....
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In Millikan’s Oil Drop Experiment An Oil Drop Carrying A Charge Q Is Held Stationary By A P.d. 2400 V Between The Plates. To Keep A Drop Of H
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Two Equal Negative Charges –q Are Fixed At Points (o, A) And (o, –a). A Positive Charge Q Is Released From Rest At The Point (2a, O) On The X
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A Cube Of Side 4 Cm Has A Constant Electric Potential Of 2 Volt On Its Surface. If There Are No Charges Inside The Cube, The Potential At A D
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Two Positive Point Charge Are Placed At The Distance A Apart Have Sum Q. What Values Of The Charges , Coulomb Force Between Them Is Maximum
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A Charge Of Magnitude Q Is Divided Into Two Parts Such That Force Between Resulting Two Charges Is Maximum When Separated Through Some Distan
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The Equation Of Displacement Of Particle Performing SHM Is X = 0.25 Sin (200 T). The Maximum Velocity Is
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A Particle Of Mass M Is Hanging Vertically By An Ideal Spring Of Force Constant K. If The Mass Is Made To Oscillate Vertically, Its Total Ene
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A Simple Pendulum Of Length L And Mass (bob) M Is Suspended Vertically. The String Makes An Angle Q With The Vertical. The Restoring Force Ac
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A Particle Executes S.H.M. Of Amplitude A. At What Distance From Mean Position Its Kinetic Energy Is Equal To Its Potential Energy?
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The Displacement Of Particle Performing Simple Harmonic Motion Is Given By, X = 8 Sin Wt + 6 Cos Wt, Where Distance Is In Cm And Time Is In S
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A Gas Is Taken In A Sealed Container At 300 K. It Is Heated At Constant Volume To A Temperature 600 K. The Mean K.E. Of Its Molecules Is
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Latent Heat Of Ice Is
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The Specific Heat Of A Gas In Isothermal Process Is
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Average Kinetic Energy Of Molecules Is
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A Diatomic Gas Initially At 18oC Is Compressed Adiabatically To One Eighth Of Its Original Volume. The Temperature After Compression Will
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The Coefficient Of Performance Of A Refrigerator Is 5. If The Inside Temperature Of Freezer Is –20°C, Then The Temperature Of The
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An Ideal Gas Heat Engine Operates In A Carnot Cycle Between 227oC And 127oC. It Absorbs 6 Kcal At The Higher Temperature. The Amount Of Hea
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Which Of The Followi Ng Pr Ocesses Is Reversible?
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An Ideal Carnot Engine, Whose Efficiency Is 40% Receives Heat At 500 K. If Its Efficiency Is 50%, Then The Intake Temperature For The Same
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A Carnot Engine Whose Efficiency Is 50% Has An Exhaust Temperature Of 500 K. If The Efficiency Is To Be 60% With The Same Intake
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The Internal Energy Change In A System That Has Absorbed 2 Kcals Of Heat And Done 500 J Of Work Is:
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Force Of Gravity Is Least At
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When A Body Is Taken From The Equator To The Poles, Its Weight
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Mass M Is Divided Into Two Parts XM And (1 ? X) M . For A Given Separation, The Value Of X For Which The Gravitational Attraction Between
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The Weight Of A Body At The Centre Of The Earth Is
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The Atmosphere Is Held To The Earth By
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A Straight Rod Of Length L Has One Of Its Ends At The Origin And The Other End At X=L If The Mass Per Unit Length Of Rod Is Given By Ax Wher
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