List of top Physics Questions asked in CUET (UG)

The electric field intensity due to an infinite thin plane sheet of surface charge density \(\sigma\) is:
Kirchhoff's Second Law is based on law of conservation of:
Identify the graph from the following showing the temperature dependence of resistivity for a typical semiconductor?
Choose the correct alternative from the following:
Choose the correct answer from the following:
If three charged particles are collinear and are in equilibrium, then:
An isolated sphere has a capacitance of 60 pF, what is the radius of the sphere?
Choose the correct statements from the following:
A. The total charge in any isolated system remains constant.
B. When some charge is transferred to a conductor, it stays at the same place without getting distributed over the entire surface.
C. One Coulomb of negative charge is the total charge of \(6.25 \times 10^{18}\) electrons.
D. Electric field is a scalar field.
E. Permanent dipole means that the dipole moment \(\vec{P}\) exists irrespective of external electric field \(\vec{E}\).
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) 
The correct mathematical expression for amplitude modulated wave is:
Which of the following statements are correct for a transistor action ?
(A) The input resistance depends upon the current IC in the transistor
(B) Collector currents is equal to the sum of base current and emitter current
(C) The emitter junction is forward biased
(D) The collector junction is reverse biased
(E) Both the emitter junction as well as the collector junction are forward biased
Choose the correct answer from the options given below:
The change of gaseous state directly to solid state without going through liquid state is called_____
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 graph showing correct variation of photo current with intensity of incident light:
Energy band gap is maximum in:
The forbidden energy gaps in conductors, semiconductors and insulators are (Eg)c, (Eg)s and (Eg)1 respectively. What is the relation among them ?
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?
The logic gate realised using p-n junction diodes in the given figure is:
The logic gate realised using p-n junction diodes
Electron and Photon have same de Broglie wavelength, which of the following is true for their momentum:
At what speed should a galaxy move with respect to earth so that spectral line of 600.0 nm appears as 600.6 nm?
Choose the correct statements:
(A) A nuclide is represented as \(^Z_AX\)
(B) Nuclids with same number of protons are called isotopes
(C) a-ray scattering experiments allow determination of the nuclear radius
(D) Nuclids with same number of neutrons are called isotones
(E) The nuclear force distinguishes between neutron and proton
Choose the correct answer from the options given below:
Match List I with List II

List-I

List-II

(A)To slow down fast moving neutrons(I)Thermal neutrons
(B)A neutron or a proton(II)Fission
(C)Slow neutrons(III)Moderator
(D)Neutron induced nuclear reaction(IV)Nucleon

Choose the correct answer from the options given below:
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)
Consider two different hydrogen atoms. The electron in each atom is in first excited state. According to Bohr's model, electrons will have:
Let us consider interference between two sources of intensities I and 4I. What will be the intensity at points where the phase difference is π?
A vertical electric field of magnitude 4.9×105 NC-1 just prevents a water droplet of mass 0.1 g from falling. What is the charge on the droplet? Take acceleration due to gravity 9.8 ms-2.