List of top Physics Questions asked in VITEEE

In Meter bridge or Wheatstone bridge for measurement of resistance, the known and the unknown resistances are interchanged. The error so removed is
Which of the following rays is emitted by a human body?
A potential difference of $2\, V$ is applied between the opposite faces of a $Ge$ crystal plate of area $1\, cm ^{2}$ and thickness $0.5 mm$. If the concentration of electrons in $Ge$ is $2 \times 10^{19} / m ^{2}$ and mobilities of electrons and holes are $0.36\, m ^{2} V ^{-1} s ^{-1}$ and $0.14\, m ^{2} V ^{-1} s ^{-1}$ respectively, then the current flowing through the plate will be
Zener diode is used for
A straight wire carrying current i is turned into a circular loop. If the magnitude of magnetic moment associated with it in MKS unit is M, the length of wire will be
An arc of radius $r$ carries charge. The linear density of charge is $\lambda$ and the arc subtends an angle $\frac{\pi}{3}$ at the centre. What is electric potential at the centre?
Sinusoidal carrier voltage of frequency $1.5\, MHz$ and amplitude $50\, V$ is amplitude modulated by sinusoidal voltage of frequency $10\, kHz$ producing $50 \%$ modulation. The lower and upper side-band frequencies in $kHz$ are
In the hydrogen atom, the electron is making $6.6 \times 10^{15}$ rps. If the radius of orbit is $0.53 \times 10^{-10}$ m, then magnetic field produced at the centre of the orbit is
The ratio of the amounts of heat developed in the four arms of a balance Wheatstone bridge, when the arms have resistances $P = 100\, \Omega,\,Q = 10\, \Omega,\, R = 300\, \Omega$ and $S = 30\, \Omega$ respectively is
There are a $25\, W -220\, V$ bulb and a $100\, W-220\, V$ line. Which electric bulb will glow more brightly?
A neutral water molecule $(H_2O)$ in its vapour state has an electric dipole moment of magnitude $6.4 \times 10^{-30} C-m$ . How far apart are the molecules centres of positive and negative charges?
A small coil is introduced between the poles of an electromagnet so that its axis coincides with the magnetic field direction. The number of turns is n and the cross-sectional area of the coil is $A$. When the coil turns through $180^{\circ}$ about its diameter, the charge flowing through the coil is $Q$. The total resistance of the circuit is $R$. What is the magnitude of the magnetic induction?
Magnetic field at the centre of a circular loop of area $A$ is $B$. The magnetic moment of the loop will be
Two light sources are said to be coherent if they are obtained from
Zener diode is used for
Figure shows a straight wire length $l$ carrying current $i$. The magnitude of magnetic field produced by the current at point $P$ is.
The attenuation in optical fibre is mainly due to
Current flow in each of the following circuit A and B respectively are
A bullet of mass \(0.02\,kg\) travelling horizontally with velocity \(250\,m\,s^{-1}\) strikes a block of wood of mass \(0.23\,kg\) which rests on a rough horizontal surface. After the impact, the block and bullet move together and come to rest after travelling a distance of \(40\,m\). The coefficient of kinetic friction on the rough surface is \((g = 9.8\,m\,s^{-2})\)
A wheel of radius \(0.4\,m\) can rotate freely about its axis as shown in the figure. A string is wrapped over its rim and an mass of \(4\,kg\) is hung. An angular acceleration of \(8\,rad\,s^{-2}\) is produced in it due to the torque. (Take \(g = 10\,m\,s^{-2}\)) The moment of inertia of the wheel is
Two persons \(A\) and \(B\) are located in X-Y plane at points \((0,0)\) and \((0,10)\) respectively. (The distances are measured in MKS unit). At a time \(t = 0\), they start moving simultaneously with velocities \(\vec{v_A} = 2\hat{i}\,m\,s^{-1}\) and \(\vec{v_B} = 2\hat{i}\,m\,s^{-1}\) respectively. Determine time after which \(A\) and \(B\) are at their closest distance.
A rod of length \(l\) is held vertically stationary with its lower end located at a point \(P\) on the horizontal plane. When the rod is released to topple about \(P\), the velocity of the upper end of the rod with which it hits the ground is
A cell in secondary circuit gives null deflection for \(2.5\,m\) length of wire for a potentialmeter having \(10\,m\) length of wire. If the length of the potentiometer wire is increased by \(1\,m\) without changing the cell in the primary, the position of the null point now is
Two radioactive materials \(x_1\) and \(x_2\) have decay constants \(10\lambda\) and \(\lambda\) respectively. Initially they have the same number of nuclei, then the ratio of the number of nuclei of \(x_1\) to that of \(x_2\) after a time \(t\) will be \(1/e\). The value of \(t\) is
The following series L-C-R circuit, when driven by an emf source of angular frequency \(70\) kilo-radians per second, the circuit effectively behaves like