Engineering Questions — Physics — JEE Main

Q.40. A parallel plate air capacitor is connected to a battery. The plates are pulled apart at uniform speed v. If x is the separation between the plates at any instant, then the time rate of change o

Q.32. The pulley shown in figure is made using a thin rim and two rods of length equal to diameter of the rim. The rim and each rod have a mass of M. Two blocks of mass of M and m are attached to two

Q.49. A circular coil of radius 2 cm and 125 turns carries a current of 1 A. The coil is placed in a uniform magnetic field of magnitude 0.4 T. The axis of the coil makes an angle of with the directi

Q.33. Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: If the average kinetic energy of and molecules, kept in two different sized c

Q.37. A spherical body of radius r and density falls freely through a viscous liquid having density and viscosity and attains a terminal velocity . Estimated maximum error in the quantity is : (Ig

Q.40. A point light source emits E.M. waves in free space. A detector, placed at a distance of L m, measures the intensity as . The detector is now shifted to another location on the same spherical su

Q.41. A convex lens is made from glass material having refractive index of 1.4 with same radius of curvature on both sides. The ratio of its focal length and radius of curvature is

Q.34. Two charged conducting spheres S and S of radii cm and cm are connected to each other by a wire. After equilibrium is established, the ratio of electric fields on S and S spheres are and res

Q.50. In a double slit experiment, when one of the slits is covered by a transparent mica sheet of refractive index 1.56, the central fringe shifts to the position of bright fringe, obtained with bot

Q.32. A solid cylinder having radius R and length L is slipping on a rough horizontal plane. At time t = 0 the cylinder has a translational velocity v = 49 m/s, perpendicular to its axis and a rotatio