Engineering Questions — Physics — JEE Main

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.35. The equation of a plane progressive wave is given by where x and y are in cm and t is in second. The velocity of the wave is _______ m/s

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

Q.48. The energy released when kg of is converted into by proton bombardment is eV. The value of is ________ (Nearest integer) (Mass of u, mass of u, mass of proton u and 1 u MeV/c and Avogad

Q.50. Two masses of 3.4 kg and 2.5 kg are accelerated from an initial speed of 5 m/s and 12 m/s, respectively. The distances traversed by the masses in the 5th second are 104 m and 129 m, respectively

Q.32. A water spray gun is attached to a hose of cross sectional area . The gun comprises of 10 perforations each of cross sectional area of . If the water flows in the hose with the speed of , calcul

Q.47. The heat extracted out of x gram of water initially at 50°C to cool it down to 0°C is sufficient to evaporate (1000 - x) gram of water also initially at 50°C. The value of x (closest integer) is

Q.36. A rigid dipole undergoes a simple harmonic motion about its centre in the presence of an electric field . If another electric field is introduced to the system, what will be the percentage chan

Q.43. K₁ and K₂ be the maximum kinetic energies of photoelectrons emitted from a surface of a given material for the light of wavelength λ₁ and λ₂, respectively. If λ₁ = 2 λ₂, then the work function o

Q.27. The charge stored by the capacitor C in the given circuit in the steady state is .......... C. [Figure: Circuit diagram with capacitor]

Q.40. Two known resistance of R and 2R and one unknown resistance X are connected in a circuit as shown in the figure. If the equivalent resistance between points A and B in the circuit is X , then

Q.50. A tube is filled with water and a wooden cube 10 cm 10cm 10cm is placed in the water. The wooden cube is found to float on the water with a part of it submerged in water. When a metal coin is

Q.41. Refer the figure given below. and are refractive indices of air and lens material. The height of image will be _______ cm. [Figure: A plano-convex lens with object and image distances].