List of top Physics Questions asked in CUET (UG)

For an electric dipole in a non-uniform electric field with dipole moment parallel to direction of the field, the force $F$ and torque $\tau$ on the dipole respectively are __________. Fill in the blank with the correct answer from the options given below.

A copper ball of density $8.0\text{ g/cc}$ and $1\text{ cm}$ in diameter is immersed in oil of density $0.8\text{ g/cc}$. The charge on the ball if it remains just suspended in oil in an electric field of intensity $600\pi\text{ V/m}$ acting in the upward direction is __________. Fill in the blank with the correct answer from the options given below. (Take $g = 10\text{ m/s}^2$)

When a slab of insulating material $4\text{ mm}$ thick is introduced between the plates of a parallel plate capacitor of separation $4\text{ mm}$, it is found that the distance between the plates has to be increased by $3.2\text{ mm}$ to restore the capacity to its original value. The dielectric constant of the material is __________. Fill in the blank with the correct answer from the options given below.

The transfer of integral number of ________ is one of the evidence of quantisation of electric charge. Fill in the blank with the correct answer from the options given below.

A body of $20\text{ g}$ and $+50\ \mu\text{C}$ charge is suspended from the ceiling by a string. If a horizontal electric field of $10\text{ kV/m}$ is applied, the angle between the string and vertical direction is: (Take $g = 10\text{ N/kg}$)

An infinitely long line charge distribution produces a field of $9 \times 10^4\ \text{NC}^{-1}$ at a distance of $2\text{ cm}$. The linear charge density of the distribution is:

Two-point charges, $q_1 = 36\ \mu\text{C}$ and $q_2 = -9\ \mu\text{C}$ are placed at a distance of $30\text{ cm}$. What distance from $q_1$, where the net electric field is zero, will be:

A negatively charged object A is repelled by another charged object B. However, an object C is attracted to object B. Which of the following is the most probable for the charge of object C?

In a certain region, a uniform electric field exists in the positive x-direction. Let $V_A = $ potential at $(0,0,0)\text{ cm}$, $V_B = $ potential at $(5,0,0)\text{ cm}$ and $V_C = $ potential at $(0,5,0)\text{ cm}$. The correct relationship between them is:

A network of five capacitors is shown in the figure. The total charge stored in the network connected between A and B is:

A dielectric is inserted between the plates of a capacitor connected to a battery. What happens?

In an EM wave, if \(\vec{B}\) is along z-axis, then direction of \(\vec{E}\) and propagation will be:

Two coherent sources of intensity ratio \(9:1\) produce interference fringes. The ratio of maximum intensity to minimum intensity will be:

To convert a galvanometer into an ammeter, we use:

Value of critical angle is maximum for light travelling from:

A bar magnet of magnetic moment \(M\) is cut into two parts symmetrically, perpendicular to its length. Then magnetic moment of each part is:

Angular width of central maxima increases when:

Wavefront for a point source, near it, is:

Ratio of radii of the 3rd orbit of H-atom and \(He^+\) ion will be:

Two nuclei have mass numbers \(64\) and \(27\). The ratio of their nuclear densities is:

A charged particle enters perpendicular to a uniform magnetic field. The path followed by the particle is:

The efficiency of an ideal transformer is:

The self inductance of a coil depends upon:

The forbidden energy gap in conductors is approximately:

In an AC circuit, the average value of alternating current over one complete cycle is: