List of top Physics Questions asked in VITEEE

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

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

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

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 capacitance of a parallel plate capacitor with air as dielectric is \( C \). If a slab of dielectric constant \( K \) and of the same thickness as the separation between the plates is introduced so as to fill \( \frac{1}{4} \)th of the capacitor (shown in figure), then the new capacitance is

If the work done in turning a magnet of magnetic moment \( M \) by an angle of \( 90^\circ \) from the magnetic meridian is in times the corresponding work done to turn it through an angle of \( 60^\circ \), then the value of \( n \) is

Seven resistances are connected between points A and B as shown in adjoining figure. The equivalent resistance between A and B is

When a certain metallic surface is illuminated with monochromatic light of wavelength \( \lambda \), the stopping potential for photoelectric current is \( V_0 \). When the same surface is illuminated with a light of wavelength \( 2\lambda \), the stopping potential is \( V_1 \). The threshold wavelength for this surface to photoelectric effect is

In the adjoining figure, two pulses in a stretched string are shown. If initially their centres are 8 cm apart and they are moving towards each other, with speed of 2 cm/s, then total energy of the pulses after 2 s will be

When two waves of almost equal frequency \( n_1 \) and \( n_2 \) are produced simultaneously, then the time interval between successive maxima is

A long glass capillary tube is dipped in water. It is known that water wets glass. The water level rises by \( h \) in the tube. The tube is now pushed down so that only a length \( h/2 \) is outside the water surface. The angle of contact at the water surface at the upper end of the tube will be

In the \( I-V \) diagram shown in adjoining figure, what is the relation between \( P_1 \) and \( P_2 \)?

In the adjoining circuit, if reading of voltmeter \( V_1 \) and \( V_2 \) are 300 volts, each, then the reading voltmeter \( V_3 \) and ammeter \( A \) are respectively

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)?

Two waves \( y_1 = A_1 \sin (\omega t - \beta_1 x) \) and \( y_2 = A_2 \sin (\omega t - \beta_2 x) \) superimpose to form a resultant wave whose amplitude is

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

Two identical magnetic dipoles of magnetic moment \( 1.0 \, \text{Am}^2 \) each, placed at a separation of 2 m with their axes perpendicular to each other. The resultant magnetic field at a point midway between the dipoles is

A lead shot of 1 mm diameter falls through a long column of glycerine. The variation of the velocity with distance covered (s) is correctly represented by

The natural frequency of the circuit shown in adjoining figure is

A student plots a graph between inverse of magnification \( \frac{1}{m} \) produced by a convex thin lens and the object distance \( u \) as shown in figure. What was the focal length of the lens used?

If \( \epsilon_0 \) and \( \mu_0 \) represent the permittivity and permeability of vacuum and \( \epsilon \) and \( \mu \) represent the permittivity and permeability of medium, then refractive index of the medium is given by

Two particles of equal mass \( m \) go round a circle of radius \( R \) under the action of their mutual gravitational attraction. The speed of each particle is

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

To get an OR gate from a NAND gate, we need