List of top Physics Questions asked in VITEEE, NEET (UG)

An electric dipole of dipole moment $p$ is aligned parallel to a uniform electric field $E$. The energy required to rotate the dipole by $ 90^\circ $ is :

For photoelectric emission from certain metal the cut-off frequency is v. If radiation of frequency 2v impinges on the metal plate, the maximum possible velocity of the emitted electron will be (m is the electron mass)

A system is taken from state $a$ to state $c$ by two paths $adc$ and $abc$ as shown in the figure. The internal energy at $a$ is $U_a=10 \, J . $ Along the path $adc$ the amount of heat heat absorbed $\delta Q_1=50\, J $ and the work obtained $\delta W_1=20 \, J $ whereas along the path $abc$ the heat absorbed $\delta Q_2=36 \, J . $ The amount of work along the path $abc$ is :

A current loop in a magnetic field :

A piece of iron is heated in a flame. It first becomes dull red then becomes reddish yellow and finally turns to white hot. The correct explanation for the above observation is possible by using :

A plano convex lens fits exactly into a plano concave lens. Their plane surfaces are parallel to each other. If lenses are made of different materials of refractive indices $\mu_1$ and $\mu_2$ and $R$ is the radius of curvature of the curved surface of the lenses, then the focal length of combination is

A rod PQ of mass M and length L is hinged at end P. The rod is kept horizontal by a massless string tied to point Q as shown in figure. When string is cut, the initial angular acceleration of the rod is:

A stone falls freely under gravity. It covers distances $h_1, h_2$ and $h_3$ in the first 5 seconds, the next 5 seconds and the next 5 seconds respectively. The relation between $h_1, h_2$ and $h_3$ is :-

A uniform force of $(3 \hat{i} + \hat{j})$ newton acts on a particle of mass 2kg. Hence the particle is displaced from position$ (2\hat{i} + \hat{k} )$ meter to position $(4\hat{i} + 3\hat{j} - \hat{k})$ meter. The work done by the force on the particle is :

A wave travelling in the $+ve$ $x-direction$ having displacement along $y$-direction as $1m$, wavelength $2 \pi m$ and frequency of $ \frac{1}{\pi} Hz$ is represented by :

A wire loop is rotated in magnetic field. The frequency of change of direction of the induced e.m.f. is :

A wire of resistance $4 \, \Omega$ is stretched to twice its original length. The resistance of stretched wire would be :

For a normal eye, the cornea of eye provides a converging power of $40\, D$ and the least converging power of the eye lens behind the cornea is $20\, D$. Using this information, the distance between the retina and the cornea -eye lens can be estimated to be -

In Young's double slit experiment, the slits are 2mm apart and are illuminated by photons of two wavelengths $\lambda_1 = 12000 \mathring A $ and $\lambda_2 = 10000 \mathring A.$ At what minimum distance from the common central bright fringe on the screen 2m from the slit will a bright fringe from one interference pattern coincide with a bright fringe from the other ?

Infinite number of bodies, each of mass 2 kg are situated on x-axis at distance 1m, 2m, 4m, 8m, ...., respectively, from the origin. The resulting gravitational potential due to this system at the origin will be

Ratio of longest wavelengths corresponding to Lyman and Balmer series in hydrogen spectrum is :

Ten identical cells connected in series are needed to heat a wire of length one meter and radius 'r' by $10^\circ C$ in time 't'. How many cells will be required to heat the wire of length two meter of the same radius by the same temperature in time 't' ?

The amount of heat energy required to raise the temperature of 1 g of Helium at NTP, from $T_1 K$ to $T_2 K$ is :

The condition under which a microwave oven heats up a food item containing water molecules most efficiently is :

The density of water at $20^{\circ}C$ is $998\, kg/m^3 $ and at $40^{\circ}C$ $992\,kg/m^3 $. The coefficient of volume expansion of water is

The pair of quantities having same dimensions is

The ratio of radii of gyration of a circular ring and a circular disc, of the same mass and radius, about an axis passing through their centres and perpendicular to their planes are :

The wettability of a surface by a liquid depends primarily on