List of top Physics Questions asked in CUET (UG)

In an LCR circuit at resonance:

Light of wavelength \(400\ \text{nm}\) falls on a metal surface. The energy of one photon is approximately: \[ \left( h=6.63\times10^{-34}\ \text{J s},\quad c=3\times10^8\ \text{m/s} \right) \]

In photoelectric effect, the stopping potential depends upon:

Electromagnetic waves are:

The ratio of electric field amplitudes and magnetic field amplitudes in an electromagnetic wave in vacuum is equal to:

Two long parallel wires carrying currents in the same direction will:

In wave optics, diffraction becomes more prominent when:

In Young's Double Slit Experiment, if the wavelength of light used is doubled while keeping all other quantities constant, the fringe width becomes:

A capacitor of capacitance \(50\ \mu\text{F}\) is connected to an AC source of frequency \(50\ \text{Hz}\). The capacitive reactance is approximately:

In an AC circuit, the rms value of current is \(5\ \text{A}\). The peak current is:

The most exotic diamagnetic materials are superconductors. They exhibit perfect diamagnetism and perfect conductivity. The values of magnetic susceptibility \((\chi)\) and relative permeability \((\mu_r)\) for such materials are:

A straight wire of mass \(500\,\text{g}\) and length \(7\,\text{m}\) carries a current of \(1.4\,\text{A}\). It is suspended in mid-air by a uniform horizontal magnetic field \(B\) perpendicular to the length of the wire. The magnitude of the magnetic field is:

A straight wire of mass \(200\,\text{g}\) and length \(1.5\,\text{m}\) carries a current of \(2\,\text{A}\). It is suspended in mid-air by a uniform horizontal magnetic field \(B\). The magnitude of \(B\) is \((g=10\,\text{m s}^{-2})\):

For the given mixed combination of resistors, calculate the total resistance between points \(A\) and \(B\).

If a straight wire of length \(175\,\text{cm}\) and mass \(250\,\text{g}\) is suspended freely in a uniform horizontal magnetic field of \(0.7\,\text{T}\), then the current flowing through the wire is:

The equivalent resistance of the following combination of resistances between \(A\) and \(C\) is:

A wire carrying current \(i\), bent as shown in the figure, is placed in a uniform magnetic field \(B\) directed normally out of the plane of the figure. The force on the wire is:

A wire of uniform cross-sectional area and resistivity has total resistance \(36\,\Omega\) and is bent into a circle as shown in the figure. The equivalent resistance between points \(A\) and \(B\) is:

Five resistors, each of resistance \(R\), are connected between points \(A\) and \(B\) as shown in the figure. The equivalent resistance between \(A\) and \(B\) is:

In the figure shown, three resistors of \(4\,\Omega\) are connected. If point \(D\) divides the resistor between \(B\) and \(C\) into two equal parts, then the equivalent resistance between points \(A\) and \(D\) is:

A straight wire loop carrying a current \( I \) sits flat inside a uniform, external magnetic field \( \vec{B} \). Under what orientation angle \( \theta \) between the normal vector of the loop surface and the magnetic field lines will the loop experience maximum torque?

Which segment of the electromagnetic wave spectrum is primarily used in line-of-sight radar systems for aircraft navigation and to cook food inside kitchen appliances?

Two long, straight parallel wires separated by a distance \( r \) carry steady currents \( I_1 \) and \( I_2 \) in the exact same direction. What type of magnetic force interaction do they experience?

A parallel-plate air capacitor has an initial capacitance value of \( 8\,\mu\text{F} \). If the space between the plates is completely filled with a solid dielectric slab having a dielectric constant \( K = 5 \), what will the new capacitance value of the component be?

An alternating current source driving a circuit is represented by the voltage equation \( V = 220\sqrt{2}\sin(100\pi t) \). What are the Root Mean Square (RMS) voltage value \( V_{\text{rms}} \) and the alternating frequency \( f \) of this source supply?