List of top Questions asked in CUET (UG)

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

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 ?

Energy band gap is maximum in:

The correct mathematical expression for amplitude modulated wave is:

Which of the following is a transducer ?
(A) Loudspeaker
(B) Amplifier
(C) Rectifier
(D) Microphone
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Which of the following statements are correct for a transistor action ?
(A) The input resistance depends upon the current I_C 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
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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:

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
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Consider two different hydrogen atoms. The electron in each atom is in first excited state. According to Bohr's model, electrons will have:

Electron and Photon have same de Broglie wavelength, which of the following is true for their momentum:

Which of the following graph correctly shows the relation between photoelectric current (I) and wavelength (λ) of incident radiation

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

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Two polaroid P₁ and P₃ are placed such that their pass-axis are mutually perpendicular. Another polaroid P₂ is rotated between P₁ and P₃. For what angle θ between P₁ and P₂ the intensity of light emerging from P₃ will be maximum?

Which of the following is/are responsible for the formation of Rainbow?
(A) Dispersion of light
(B) Interference of light
(C) Reflection of light
(D) Refraction of light
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The shape of graph between 1/u and 1/v in case of a convex lens is:

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

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?

When a ray of light enters from denser medium to rarer medium, its velocity is doubled. The critical angle for total internal reflection will be:

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

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

The statement that is NOT true about induced emf is:

A coil having 'n' turns and resistance 'R'Ω is connected with a galvanometer of resistance '4R' Ω. What is the induced current in the circuit when this combination (coil+galvanometer) is moved in time t from a magnetic flux Φ1 to Φ2?

Match List I with List II

	LIST I		LIST II
A.	Infra red waves	I.	Eye surgery
B.	Microwaves	II.	1 nm to 10-3 nm
C.	Ultraviolet	III.	Heat waves
D.	X-rays	IV.	Produced by special vaccum tubes

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