List of top Physics Questions asked in CUET (UG)

Two wires of copper have lengths L and 2L and cross sectional area 2A and A, respectively. The ratio of their specific resistance would be-

What is the self inductance of a solenoid of length 50 cm, if area of cross section is 10 cm² and total number of turns is 600?

A parallel beam of monochromatic light of wavelength 460 nm passes through a long slit of width 0.1 mm. What is the angular divergence in which most of the light is diffracted?

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 type of wavefront that emerges from a distant light source is:

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) 

Energy band gap is maximum in:

Kirchhoff's Second Law is based on law of conservation of:

After 4 hours,\(\frac{1}{16}\) of the initial amount of a certain radioactive isotype remains undecayed. What is the half life of the isotope?

A spherical conducting shell of inner radius r₁ and outer radius r₂ has a charge Q. A charge q is placed at the centre of the shell. The surface charge density on outer surface of the shell is:

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.

A conducting sphere of radius R is given a charge Q. What is the electric field and the electric potential at the centre of the sphere?

An alternating voltage V = 140 sin 100 πt is connected across a pure resistor of resistance 40 Ω. What is the rms current through the resistor? (Take √2 = 1.4)

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)

C.V. Raman got Nobel Prize in 1930 for his discovery of:

When 100 V dc is applied across a solenoid, a current of 1 A flows in it. When 100 V ac is applied across the same solenoid the current drops to 0.5 A. If the frequency of the ac source is 50 Hz, the impedance and inductance of the solenoid are:

SI unit of temperature is ________.

Match List I with List II

Choose the correct answer from the options given below:

A semiconductor has an electron concentration of 8 x 10¹³ m^-3 and hole concentration of 2 × 10³ m^-3. The semiconductor behaves as:

Four identical capacitors each of capacitance C are arranged as shown in the figure. What is the effective capacitance between P and Q?

Why do light emitting diodes are preferred over conventional incandescent low power lamps?

What is the de Broglie wavelength associated with an elector accelerated through a potential difference of 144 V?

The truth table for one of the following logic gates is given. Identify the logic gate

In Young's double slit experiment, yellow light of wavelength 640 nm produces fringes of width 0.8 mm. What will be the fringe width if the light source is replaced by another monochromatic source of wavelength 720 nm and the separation between the slits is made thrice?

The statement that is NOT true about induced emf is: