List of top Physics Questions asked in VITEEE

Current density varies with radial distance \( r \) as \( J = a r^2 \), in a cylindrical wire of radius \( R \). The current passing through the wire between radial distance \( R/3 \) and \( R/2 \) is

A potentiometer circuit shown in the figure is set up to measure emf of cell E. As the point P moves from X to Y, the galvanometer G shows deflection always in one direction, but the deflection decreases continuously until Y is reached. The balance point between X and Y may be obtained by

A solid sphere of radius \( R \) carries a uniform volume charge density \( \rho \). The magnitude of electric field inside the sphere at a distance \( r \) from the centre is

Two solenoids are given – 1st has 1 turn per unit length and 2nd has \(n\) turns per unit length. Ratio of magnetic fields at their centres is

A positively charged particle is placed near an infinitely long straight conductor where there is zero gravity. Then

A metallic bar is heated from \(0^\circ \, \text{C}\) to \(100^\circ \, \text{C}\). The coefficient of linear expansion is \(10^{-5} \, \text{K}^{-1}\). What will be the percentage increase in length?

Which statement is correct for the given circuit?

For what value of \( A \), \( B \), and \( C \), the output \( Y = 1 \)?

If the wavelength is brought down from 6000 Å to 4000 Å in a photoelectric experiment then what will happen?

The wavelength of an electron for transition from a state \(n_1\) to \(n_2\) is \( \frac{9}{8R} \). Which of the following wavelengths is possible for a transition from \(n_2\) to \(n_1\)?

A square current carrying loop is changed to a circular loop in time \( t_1 \). Then

In given circuit, all resistances are of \( 1 \, \Omega \). Current flowing through ammeter is

Holography is based on phenomenon of

In shown fig, the circular loop of wire is moved with velocity towards the infinite current carrying wire. Then

For a current carrying inductor, emf associated is 20mV. Now, current through it changes from 6A to 2A in 2s. The coefficient of mutual inductance is

If the terminal speed of a sphere of gold (density \(19.5 \, \text{g/cm}^3\)) is \(0.2 \, \text{m/s}\) in a viscous liquid (density \(1.5 \, \text{kg/m}^3\)), find the terminal speed of a sphere of silver (density \(10.5 \, \text{g/cm}^3\)) of the same size in the same liquid.

The potential energy of a system increases if work is done

In Wheatstone bridge, 4 resistors \( P = 10 \, \Omega \), \( Q = 5 \, \Omega \), \( R = 4 \, \Omega \), \( S = 4 \, \Omega \) are connected in cyclic order. To ensure no current through galvanometer,

In photoelectric effect, initially when energy of electrons emitted is \( E_0 \), de-Broglie wavelength associated with them is \( \lambda_0 \). Now, energy is doubled then associated de-Broglie wavelength \( \lambda' \) is

In given circuit, \( C_1 = C_2 = C_3 = C \) initially. Now, a dielectric slab of dielectric constant \( K = \frac{3}{2} \) is inserted in \( C_2 \). The equivalent capacitance becomes

In given circuit, all resistances are of $10 \Omega$. Current flowing through ammeter is

Which statement is correct for the given circuit?

A (+)vely charged particle is placed near an infinitely long straight conductor where there is zero gravity. Then

Two point dipoles $p \hat{k}$ and $\frac{p}{2} \hat{k}$ are located at $(0,0,0)$ and $(1\, m , 0,2\, m )$ respectively. The resultant electric field due to the two dipoles at the point $(1 \,m , 0,0)$ is

The current in an $L-R$ circuit builds up to $\left(3 / 4^{\text {th }}\right)$ of its steady state value in $4$ seconds. The time constant of this circuit is