List of top Physics Questions asked in CUET (UG)

Identify the logic operation carried out by the following circuit.

In the figure, the potential difference between A and B is:

Match List I with List II

List I	List II
(A) Zener Diode	(II) Voltage Regulator
(B) LED	(III) Remote Control
(C) Rectifier	(IV) AC to DC
(D) Photo diode	(I) Detect optical signal

The height of a TV tower is 180 m. To what distance the transmission can be made from this tower, if the radius of earth is \(6.4 \times 10^6\) m?

Match List I with List II

List I	List II
(A) Modulation	(III) Superimposition of a signal on a high frequency wave
(B) Baseband signals	(IV) Band of frequencies representing the original signal
(C) Demodulation	(I) Retrieval of information from the carrier wave at the receiver
(D) Bandwidth	(II) Frequency range over which an equipment operates

Two point charges \(q\) and \(-3q\) are kept 12 cm apart. The distance of the point from \(q\) on the line between two charges at which potential due to this system of charges is zero will be:

The displacement current due to time varying electric field is given by

The graph shows the variation of the magnification (m) produced by a thin lens with image distance (v). The focal length of the lens is:

Match List I with List II using Bohr’s Atomic Model

List I	List II
(A) Radius of electron orbit	(I) directly proportional to n2
(B) Angular momentum of electron	(II) directly proportional to n
(C) Velocity of electron	(III) inversely proportional to n
(D) Energy of electron	(IV) inversely proportional to n2

For a medium with permittivity (e) and permeability (µ), the speed of light (v) is given by:

Six equal resistances are connected between points P, Q and R as shown in the figure. The net resistance will be maximum between:

A series AC circuit has a resistance 8Ω and a reactance of 6Ω . The impedance of the circuit is:

10 resistors, each of resistance R are connected in series to a battery of emf E and negligible internal resistance. Then those are connected in parallel to the same battery, the current is increased n times. The value of n is:

The drift speed of electrons in a conductor is estimated to be only a few mm s^-1, But on closing a circuit, how current is established almost instantly in an electric circuit?

Two thin lenses of power +3D and -1D are held in contact with each other. Focal length of the combination would be:

A \(ẞ\)-particle is moving perpendicular to the uniform electric field created by a potential difference of \(6 × 10^3\) V across parallel metal plates separated by a vertical distance of 6 cm. What is the acceleration of the beta particle between the plates? (Mass of electron = \(9.1 × 10^{-31}\)kg) 

At what speed should a galaxy move with respect to earth so that spectral line of 600.0 nm appears as 600.6 nm?

A radioactive isotope phosphorous-32 has an initial activity 10μCi and has half life of 14 days. What is the activity of the source after 42 days?

What is the wavelength of light for the least energetic photon emitted in the Lyman series of the hydrogen atom spectrum lines?
(Take h=6.63×10^-34Js; c=3×10⁸ ms^-1; e=1.6×10^-19C)

The graph showing correct variation of photo current with intensity of incident light:

Which of the following is a transducer ?
(A) Loudspeaker
(B) Amplifier
(C) Rectifier
(D) Microphone
Choose the correct answer from the options given below :

The correct mathematical expression for amplitude modulated wave is:

Energy band gap is maximum in:

The forbidden energy gaps in conductors, semiconductors and insulators are (E_g)_c, (E_g)_s and (E_g)₁ respectively. What is the relation among them ?