List of top Physics Questions asked in VITEEE

Two points masses, $m$ each carrying charges $-q$ and $+q$ are attached to the ends of a mass less rigid non-conducting wire of length $'L'$. When this arrangement is placed in a uniform electric field, then it deflects through an angle $i$. The minimum time needed by rod to align itself along the field is

Two sources of equal emf are connected to a resistance $R$. The internal resistance of these sources are $r_1$ and $r_2 (r_1 > r_2 )$. If the potential difference across the source having internal resistance $r_2$ is zero, then

Two polaroids are kept crossed to each other. If one of them is rotated an angle $60^{\circ}$, the percentage of incident light now transmitted through the system is

The refractive index for a prism is given as $\mu = \cot \frac{A}{2}$. Then, angle of minimum deviation in terms of angle of prism is

The masses of three copper wires are in the ratio $2 : 3 : 5$ and their lengths are in the ratio $5 : 3 : 2$ .Then, the ratio of their electrical resistances is

In a potentiometer experiment, the balancing length of a cell is $560\, cm$. When an external resistance of $10 \, \Omega$ is connected in parallel to the cell, the balancing length changes by $60 \,cm$.The internal resistance of a cell is

An installation consisting of an electric motor driving a water pump left $75\, L$ of water per second to a height of $4.7\, m$. If the motor consumes a power of $5\, kW$, then the efficiency of the installation is

If in a nuclear fission, piece of uranium of mass $5.0\, g$ is lost, the energy obtained in $kWh$ is

Four resistance of $10\, \Omega, 60\, \Omega ,\, 100\, \Omega$ and $200\, \Omega$ respectively taken in order are used to form a Wheatstone?s bridge. A $15\,V$ battery is connected to the ends of a $200 \, \Omega$ resistance, the current through it will be

An $LCR$ circuit contains $R = 50 \, \Omega , L = 1 \, mH $ and $C = 0.1 \mu F$ . The impedence of the circuit will be minimum for a frequency of

A circular current carrying coil has a radius $R$. The distance from the centre of the coil on the axis, where the magnetic induction will be $\frac{1}{8}$th to its value at the centre of the coil is

A galvanometer has current range of $15\, mA$ and voltage range $750\, mV$. To convert this galvanometer into an ammeter of range $25\, A$, the required shunt is

A circuit has a self-inductance of $1\,H$ and carries a current of $2\,A$. To prevent sparking, when the circuit is switched off, a capacitor which can withstand $400\, V$ is used. The least capacitance of capacitor connected across the switch must be equal to

A proton and an $\alpha$ -particle, accelerated through the same potential difference, enter a region of uniform magnetic field normally. If the radius of the proton orbit is $10 \,cm$, then radius of $\alpha$ -particle is

The output $Y$ of the logic circuit shown in figure is best represented as

The amplification factor of a triode is $50$. If the grid potential is decreased by $0.20\, V$. What increase,in plate potential will keep the plate current unchanged?

The Daniel cell is balanced on $125\, cm$ length of a potentiometer. Now, the cell is short circuited by a resistance of $2\, \Omega$ and the balance is obtained at $100\, cm$. The internal resistance of the denial cell is

The output $Y$ of the logic circuit shown in figure is best represented as

If we add impurity to a metal those atoms also deflect electrons. Therefore,

A body of mass $2 \,kg$ moving with velocity of $6\, m/s $ strikes in elastically with another body of same mass mass at rest. The amount of heat evolved during collision is

Four equal charges $q$ each are placed at four corners of a square of side a each. Work done in carrying a charge $-q$ from its centre to infinity is

As the electron in Bohr?s orbit of hydrogen atom passes from state $n$ = 2 to, $n =1$, the Kinetic energy (K) and the potential energy (U) changes as

If a current $I$ is flowing in a loop of radius $r$ as shown in adjoining figure, then the magnetic field induction at the centre $O$ will be

If a gas mixture contains 2 moles of $O_2$ and $4$ moles of $Ar$ at temperature $T$, then what will be the total energy of the system (neglecting all vibrational modes)