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

A thin spherical shell is charged by some source. The potential difference between the two points C and P (in V) shown in the figure is:
(Take $\frac{1}{4}\pi\epsilon_0 = 9 × 109$$\frac{1}{4\pi\epsilon_0}=9\times10^9$ SI units)

A thermodynamic system is taken through the cycle abcda. The work done by the gas along the path bc is :

A bob is whirled in a horizontal plane by means of a string with an initial speed of ω rpm. The tension in the string is T. If speed becomes 2ω while keeping the same radius, the tension in the string becomes:

The graph which shows the variation of $\big(\frac{1}{\lambda^2} \big)$and its kinetic energy, is $E$ (where $λ$ is de Broglie wavelength of a free particle):

In an ideal transformer, the turns ratio is $N_p/N_s$ =1/2 .The ratio $V_S:V_P$ is equal to (the symbols carry their usual meaning):

A tightly wound $100$ turns coil of radius $10 cm$ carries a current of $ 7 A$. The magnitude of the magnetic field at the centre of the coil is (Take permeability of free space as $4\pi×10^{-7}$ SI units):

A horizontal force 10 N is applied to a block 4 as shown in figure. The mass of blocks A and B are 2 kg and 3 kg, respectively. The blocks slide over a frictionless surface. The force exerted by block A on block B is:

The terminal voltage of the battery, whose emf is$10V$ and internal resistance$1Ω$, when connected through an external resistance of $4Ω$ as shown in the figure is:

A logic circuit provides the output y as per the following truth table:

A	B	Y
0	0	1
0	1	0
1	0	1
1	1	0

The expression for the output Y is:

In a Vernier caliper, $N+1$ divisions of vernier scale coincide with $N$ divisions of main scale. If 1 MSD represents 0.1 mm, the vernier constant (in cm) is:

Two bodies of mass 4 g and 25 g are moving with equal kinetic energies. The ratio of magnitude of their linear momentum is:

The waves emitted when a metal target is bombarded with high energy electrons are:

A heavy box of mass 50 kg is moving on a horizontal surface. If the coefficient of kinetic friction between the box and the horizontal surface is 0.3, then the force of kinetic friction is:

Two light beams of intensities in the ratio of 9:4 are allowed to interfere. The ratio of the intensity of maxima and minima will be:

If $ \mathbf{A} = 4\hat{i} + 3\hat{j} $ and $ \mathbf{B} = 3\hat{i} + 4\hat{j} $, then the cosine of the angle between $ \vec{A} $ and $ \vec{A} + \vec{B} $ is:

The refractive index $ \mu $ of the material of a prism is given by: % Formula for Refractive Index \[ \mu = \frac{\sin \left( \frac{A + \delta_m}{2} \right)}{\sin \left( \frac{A}{2} \right)} \] where $ A $ is the apex angle of the prism and $ \delta_m $ is the angle of minimum deviation.

Magnetic field at the centre of a circular coil of radius $ r $, through which a current $ I $ flows is:

A bob of mass $ m $ is suspended by a light string of length $ L $. It is imparted a minimum horizontal velocity at the lowest point A such that it just completes half a circle, reaching the topmost position B. The ratio of kinetic energies $\left(\frac{K.E.}{K.E.}\right)_A $, $\text{to}$, $\left(\frac{K.E.}{K.E.}\right)_B$ is:

Two objects A and B are placed at 15 cm and 25 cm from the pole in front of a concave mirror having radius of curvature 40 cm. The distance between images formed by the mirror is:

In meter bridge or Wheatstone bridge for measurement of resistance, the known and the unknown resistance are interchanged. The error so removed is:

At what temperature should a gold ring of diameter 6.230 cm be heated so that it can be fitted on a wooden bangle of diameter 6.241 cm? Both the diameters have been measured at room temperature (27 °C).
Given: Coefficient of linear thermal expansion of gold $ \alpha = 1.4 \times 10^{-5} \, \text{K}^{-1} $.

In the given circuit, the rms value of current ($ I_{\text{rms}} $) through the resistor $ R $ is: