CUET Questions — Physics

Q9. Let a rod AB of length l having resistance r is moving perpendicular to a magnetic field B with constant velocity v. If the ends of the rod is connected to a wire PQRS of negligible resistance, th

Q23. The electrical conductivity of a semiconductor increases when electromagnetic radiation of wavelength shorter than 2480 nm is incident on it. The band gap for the semiconductor is: (a) 0.5 eV (b)

Q24. In a Young double slit experiment, if one of the slits is covered with a black paper then: (a) Fringe width of central maxima decreases (b) Intensity of the central maxima increases (c) Width of

Q9. Let a rod AB of length l having resistance r is moving perpendicular to a magnetic field B with constant velocity v. If the ends of the rod is connected to a wire PQRS of negligible resistance, th

Q3. What is the force between two small charged spheres having charges of 4 x 10-7C and 6 × 10-7C placed 60 cm apart in air? (a) 3 x 10-3N (b) 4 x 10-3N (c) 6 x 10-3N (d) 9 x 10-3N

Q40. Match List - I with List - II. List - I (A) Electric Field (B) Electric Flux (C) Electric Dipole Moment (D) Area Vector Element List - II (I) [LTA] (II) [L²] (III) [ML³ T⁻³ A⁻¹] (IV) [MLT⁻³ A⁻¹]

Q38. The force between two electric charges is expressed by the equation: F = k q1 92 / r². Which of the following is a correct statement? (a) The equation applies to point charges (b) k is Boltzmann'

Who among the following discovered that when light traverses a transparent material, some of the light that is deflected changes in wavelength?

Q6. The increased resistance of a wire if its length is doubled and original cross-sectional area is halved will be: Given R- original resistance of wire)

Q5. Figure shows drift speed Va of conduction electrons in a copper wire versus position (X) for the three sections. Then, Vd ΙⅡⅢ X (A) Radius of III > Radius of II > Radius of I (B) Electric Field in

Q43. Match List - I with List - II. List - I (A) 1 T (B) 1H (C) JT⁻¹ (D) 1 Wb List - II (I) Vs (II) 1 m² A (III) Wb/m² (IV) Wb/A Choose the correct answer from the options given below: (a) (A)-(I), (B

Q48. A monochromatic visible light consists of

Q49. The objective of a reflecting telescope is a: (a) Convex lens (b) Concave mirror (c) Concave lens (d) Prism

Q13. A Potentiometer wire of length L and a resistance r are connected in series with a battery of emf Eo and a resistance r(a) An unknown emf E is balanced at a length I of the potentiometer wire. Th

Q27. A parallel plate capacitor with air between the plates has a capacitance of 6pF. What will be the capacitance if the distance between the plates is reduced to half and the space between them is f

Q20. In the figure, an α-particle moves a distance l in a uniform electric field E as shown. Does the Electric Field do a positive or a negative work on the α-particle? Does the electric potential ene

Q38. When a ferromagnetic substance is placed in a magnetic field, it becomes a permanent magnet because:

Q39. Electrostatics deals with the study of forces, fields and potential arising from static charges. Which of the following statements are correct? (A) Electrostatic force is a conservative force (B)

Q21. Three circuits are shown below in which same alternating current is flowing. What will be the effect on currents in three cases respectively if frequency of alternating emf be increased? (i) [Res

Q33. A parallel plate capacitor whose capacitance C is 13.0 pF is charged by a battery to a potential difference V = 13.0 V between its plates. What is the potential energy of the capacitor? (a) 1.098