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Multiple Correct answer follows A positively charged thin metal ring of radius R is fixed in the xy-plane with its centre at the origin O. A negatively charged particle P is released from rest at the point ( 0, 0, z0) where z ...

A parallel plate capacitor of plate area A and plate separation d is charged to a potential difference V & then the battery disconnected. A slab of dielectric constant K is then inserted between the plates of the capacitor so ...

Three metallic spherical shells A, B aand C of radii a, b and c(a<b<c) respectively are placed with centre O. Initially all the three shells are given positive charge q. If the inner shell is earthed, Find the amount ...

Now keeping shell A earthed, shell C is also earthed. Find the charge that will flow from shell C to the earth. ...

A square loop carrying a current i is situated near a long straight wire such that the wire is parallel to one of the sides of the loop and is in the plane of loop. The side of the loop is L and the distance of the nearest si ...

Suppose there is no current flowing in the loop initially. The current in the long wire is increasing at the rate of 2 A/s. The resistance of the loop is R. The induced current in the loop is ...

Two spherical balls of mass M & 5M and radii R & 2R respectively are released in free space with initial seperation b/w their centres equal to 12R. If they attract each other due to gravitational force only, then the distance ...

A student throws a stick of length L up in yhe air. At the moment the stick leaves his hand, the speed of the stick's end is 0. The stick completes N turns and is caught by the student in the same way as is thrown by him ...

A rod AB of mass M and length L is lying on a horizontal frictional surface. A particle of mass m travelling along the surface hits the end 'A' of the rod with a velocity of v ina a direction perpendicular to AB and c ...

The solid hemisphere of glass of refractive index mu=1.5,radius=20 cm.The position of the image formed of an object placed at 50cm from the plane surface is ...

Identify the correct order of reactivity in electrophilic substitution reaction of the following compounds: 1:benzene 2:toluene 3:chlorobenzene ...

The reaction of propene with HOCl proceeds via the addition of ...

Which one of the following heptanols can be dehydrated to hept-3-ene only? ...

Which of the following exhibits stereoisomerism? ...

The IUPAC name of *Image* is ...

A colloidal system in which solid is dispersed in a liquid is called ...

The half life for a radioactive disintegration is 100 year-1. Time in which 87.5% of the radioactive element is decomposed is ...

For the reaction N2+3H2→2NH3 rate of appearance of NH3 is 6 mol L-1 s-1 then rate of disappearance of H2 is ...

The emf of the cell, Zn|Zn2+(0.01M)||Zn2+(0.1M)|Zn is given by (E°Zn2+,Zn=-0.76 V) ...

Which of the following is true regarding bond order? ...

Shape and hybridization of XeF2 is ...

An electron travels with a velocity of v m/s. For a proton to have the same de Broglie wavelength, the velocity will be approximately ...

In a compound, element Y form fcc and element X occupies half octahedral voids. The formula of the compound is ...

pH of 0.1M aqueous solution of acetic acid is (Ka=4×10-5) ...

Consider the following equilibrium in a closed container N2O4 [eq] 2NO2 At a fixed temperature the volume of the reaction container is halved, Then which of the following is true regarding equilibrium constant(Kp) and degree ...

The enthalpy of combustion at 25°C of H2, cyclohexene(C6H10) and cyclohexane(C6H12) are -241, -3800 and -3920 kJ/mol respectively. The heat of hydrogenation of cyclohexene is ...

The vapour pressure of solution of 5 g of non-electrolyte in 100 g of water at a particular temperature is 2985 M/m2. The vapour pressure of pure water at that temperature is 3000 N/m2. The molecular weight of the solute is ...

The root mean square velocity of hydrogen is √7 times the root mean square velocity of nitrogen. If T is the temperature of the gas, ...

How many moles of electron weigh one kilogram? ...

When two diffetent capacitors carrying diffeent charges are connected , the final energy of the system ...