List of top Physics Questions asked in CUET (UG)

In a series \(LCR\) circuit, resonance occurs when:
The drift velocity of electrons in a conductor increases when:
The magnetic field at the center of a circular coil carrying current is directly proportional to:
A semiconductor diode is forward biased. The depletion layer width will:
A long solenoid has \(1000\) turns per meter and carries a current of \(2\,A\). The magnetic field inside the solenoid is: \[ (\mu_0 = 4\pi \times 10^{-7}\,TmA^{-1}) \]
Which of the following statements is not true about electric field lines?
If the charge on an object is doubled then electric field becomes
The magnetic induction at the centre $O$ in the figure shown is
Three long, straight parallel wires, carrying current, are arranged as shown in figure. The force experienced by a 25 cm length of wire $C$ is
Under the action of a given coulombic force the acceleration of an electron is $2.5 \times 10^{22}\text{ m s}^{-2}$. Then the magnitude of the acceleration of a proton under the action of same force is nearly
A steady current flow through a long straight wire of radius ' $a$ '. The current is uniformly distributed across its cross section. The ratio of the magnetic fields due to the wire at distance $\frac{a}{4}$ and $3a$ respectively from the axis of the wire is
The nucleus of helium atom contains two protons that are separated by a distance $3.0 \times 10^{-15}$ m. The magnitude of the electrostatic force that each proton exerts on the other is
In the figure shown, the magnetic field induction at the point $O$ will be
What are the respective numbers of $\alpha$ and $\beta$ particles emitted respectively in the following radioactive decay? \[ {}_{90}^{200}X \longrightarrow {}_{80}^{168}Y \]
Current $I$ is flowing in conductor shaped as shown in the figure. The radius of the curved part is $r$ and the length of straight portion is very large. The value of the magnetic field at the centre $O$ will be
Find the ratio of de-Broglie wavelengths of deuteron having energy E and \(\alpha\)-particle having energy 2E :
A convex lens forms an image at twice the distance of the object from the lens. What is the magnification?
In the (i) absence of electric field, and in the (ii) presence of electric field, the paths of electrons between successive collisions with the positive ions of the metal, are
Two point charges placed a distance d apart in vacuum exert a force of magnitude F on each other. One of the two charges is doubled. To keep the magnitude of force same the separation between the charges should be changed to
Two point charges, 4 µC and -3 µC (with no external field) are placed at (-6 cm, 0, 0) and (6 cm, 0, 0), respectively. The amount of work required to separate the two charges infinitely away from each other will be
In a series combination of capacitors connected across a battery
A charge of magnitude \(3 \times 10^{-7}\) C is located at a distance of 0.09 m from a point P. Obtain the work done in bringing a charge of \(2 \times 10^{-9}\) C from infinity to the point P.
If the protons and electrons are the only basic charges in the universe, all the observable charges have to be integral multiples of e. Thus, if an object contains x electrons and y protons, the net charge on the object will be
For an ac source rated at 220 V, 50 Hz, which of the following statements is correct?
A resistor develops 800 J of thermal energy in 20 s on applying a potential difference of 20 V. Its resistance is