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