List of top Physics Questions asked in CUET (UG)

Match the electromagnetic waves in Column I with their common applications in Column II. 

Column IColumn II
(A)Gamma rays(I)Radar communication
(B)X-rays(II)Cancer treatment
(C)Microwaves(III)Bone imaging
(D)Radio waves(IV)Broadcasting

Choose the correct answer from the options given below:

Match the electromagnetic waves in Column I with their common applications in Column II. 

Column IColumn II
(A)Gamma rays(I)Radar communication
(B)X-rays(II)Cancer treatment
(C)Microwaves(III)Bone imaging
(D)Radio waves(IV)Broadcasting

Choose the correct answer from the options given below:

Match the semiconductor devices in Column I with their functions in Column II. 

Column IColumn II
(A)LED(I)Voltage Regulation
(B)Zener Diode(II)Light Emission
(C)Photodiode(III)Light Detection
(D)Solar Cell(IV)Converts Solar Energy into Electrical Energy

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Match the following electromagnetic waves with their applications. 

Column IColumn II
(A)Gamma Rays(I)Radar Communication
(B)X-rays(II)Cancer Treatment
(C)Microwaves(III)Medical Imaging
(D)Radio Waves(IV)Broadcasting

Choose the correct answer from the options given below:

The energy of an electron in the first Bohr orbit of hydrogen atom is \(-13.6\,eV\). The energy of the electron in the third orbit is
Given below are two statements: Assertion (A): In a nuclear reactor, control rods are used to control the rate of fission reaction. Reason (R): Control rods absorb excess neutrons produced during fission. Choose the correct answer from the options given below:
A photon of wavelength \(500\,nm\) is incident on a metal surface. The energy of the photon is approximately \((h=6.63\times10^{-34}\,Js,\; c=3\times10^8\,m/s)\)
A convex lens has a focal length of \(20\,cm\). An object is placed \(30\,cm\) from the lens. The image distance is
Given below are two statements: Assertion (A): Electromagnetic waves can travel through vacuum. Reason (R): Electromagnetic waves consist of oscillating electric and magnetic fields. Choose the correct answer from the options given below:
Given below are two statements: Assertion (A): In a pure inductive AC circuit, current lags voltage by \(90^\circ\). Reason (R): An inductor opposes the change in current flowing through it. Choose the correct answer from the options given below:
A resistor of resistance \(20\,\Omega\) is connected across a \(10\,V\) battery. The current flowing through the resistor is
Two charges \(+4\,\mu C\) and \(+9\,\mu C\) are separated by a distance of \(3\,m\) in vacuum. The electrostatic force between them is \((k=9\times10^9\,Nm^2C^{-2})\)
In a semiconductor, the conductivity increases with increase in temperature because
Two capacitors of capacitances \(6\,\mu F\) and \(3\,\mu F\) are connected in series across a battery. The equivalent capacitance of the combination is
Two coils have mutual inductance \(0.5\,\text{H}\). If the current in the primary coil changes at the rate of \(4\,\text{A s}^{-1}\), the induced emf in the secondary coil is
A long straight conductor carries a current of \(10\,\text{A}\). The magnetic field at a point \(20\,\text{cm}\) away from the conductor is \((\mu_0=4\pi\times10^{-7}\,\text{TmA}^{-1})\)
An object is placed \(30\,\text{cm}\) in front of a concave mirror of focal length \(20\,\text{cm}\). The image distance is
A photon has energy \(6\,\text{eV}\). The corresponding work function of a metal is \(2\,\text{eV}\). The maximum kinetic energy of the emitted photoelectron is
According to Bohr's atomic model, the angular momentum of an electron in the \(n^{\text{th}}\) orbit is
In an AC circuit containing a pure resistor, the phase difference between voltage and current is
A galvanometer of resistance \(50\,\Omega\) gives full-scale deflection when a current of \(2\,\text{mA}\) passes through it. The value of shunt resistance required to convert it into an ammeter of range \(2\,\text{A}\) is
In a semiconductor, the conductivity increases with increase in temperature because
A long straight conductor carries a current of \(10\,\text{A}\). The magnetic field at a point \(20\,\text{cm}\) away from the conductor is \((\mu_0=4\pi\times10^{-7}\,\text{TmA}^{-1})\)
An object is placed \(30\,\text{cm}\) in front of a concave mirror of focal length \(20\,\text{cm}\). The image distance is
Two capacitors of capacitances \(6\,\mu F\) and \(3\,\mu F\) are connected in series across a battery. The equivalent capacitance of the combination is