CUET Questions — Physics

Q11. A long straight wire of circular cross section with radius 'a' carries steady current 'I' which is uniformly distributed across the cross-section. The magnetic field in the region r < a and r > a

Q28. For insulators and semiconductors, the resistance decreases with increase in temperature because (a) number density decreases (b) number density of charge carriers increases (c) Resistivity does

Q34. Match List - I with List - II. List - I (A) Resistive Circuit (B) Purely inductive or capacitive circuit (C) LCR series circuit (D) Power dissipated at resonance in LCR circuit List - II (I) No p

Q32. What is the work done in moving a dq charge from A to B?

Q38. Which of the following diagram correctly shows the electrostatic properties of a charged conductor. (Given V₀ = potential on the surface of conductor; ρ = Volume charge density.)

Q24. the shape of a wavefront when light emerging out of a convex lens when a parallel beam of light incident over it is, (a) Parabolic (b) Plane (c) Cylindrical (d) Spherical

Q41. The colour of the third band of a colour coded carbon resistor of resistance 2.3 × 10² Ω would be:

Q34. The wavelength of radiation emitted, when He⁺ makes a transition from the state n = 3 to the state n = 2 will be: (Take Rydberg constant R - 1.097 x 10⁷ m⁻¹) (a) 1.641 nm (b) 164.1 nm (c) 16.41 u

Q43. In free space, all components of the complete electromagnetic spectrum have the same (a) energy (b) velocity (c) frequency (d) intensity

Q5. Two identical circular wires P and Q each of radius R and carrying current I are kept in perpendicular planes such that they have a common centre as shown in figure. Find the magnitude and directi

Q18. A network of three capacitors each 9 µF connected in series and the fourth capacitor of 6 µF is supplied 400 V as shown in figure. The ratio of charge on the capacitor C₁ to the capacitor C4 is:

Q39. A p-n junction diode can be used:

Q28. The wavelength of light from the spectral emission line of sodium is 662 nm. The kinetic energy at which an electron would have same de-Broglie wavelength would be: (h = 6.62 x 10⁻³⁴ J-s, me = 9

Q40. A telescope has an objective of focal length 30 cm and an eyepiece of focal length 3.0 cm. It is focused on a scale distant 2.0 m. For seeing with relaxed eye, the separation between the objectiv

Q26. An a.c voltage is applied to a resistor of resistance 50 Ω and an inductor having inductive reactance of 50 Ω connected in series. The phase difference between applied voltage and the current in

Q15. A transformer has an efficiency of 80%. It works at 3 kW and 120 V. If the secondary voltage is 240 V, what will be the secondary current? (a) 2.5 A (b) 12.5 A (c) 25 A (d) 10 A

Q4. What is the mathematical expression for potential gradient? (a) dv / rdr (b) dE / dr (c) dv / dr (d) dv / dA

Q54. Match List I with List II LIST I Physical Quantity A. Electric charge B. Force C. Power D. Energy LIST II Units I. Newton II. Coulamb III. Joule IV. Watt

Q43. A message signal of peak value 2 V is used to modulate a carrier wave of peak value 10 V. The modulation index of the amplitude modulated wave is:

Q25. Arrange the following m Increasing number of quantum number when coming from excited energy state A. Lyman Series B. Balmer Series C. Paschen Series D Brackett Series E. Pfund Series Choose the c