Physics · 2021 · 25 Jul · Shift 2
25 questions from this JEE Main paperGuest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
Physics · 2021 · 25 Jul · Shift 2
25 questions from this JEE Main paper
Motion in A Straight Line3 questionsSimple Harmonic Motion1 questionsLaws of Motion1 questionsGeometrical Optics2 questionsMagnetics1 questionsAlternating Current2 questionsCapacitor1 questionsGravitation1 questionsElectrostatics1 questionsProperties of Matter1 questionsUnits and Measurements1 questionsDual Nature of Radiation3 questionsVector Algebra1 questionsHeat and Thermodynamics1 questionsCurrent Electricity1 questionsAtoms and Nuclei1 questionsWork Power and Energy1 questionsRotational Motion1 questionsElectronic Devices1 questions
- Q47.The relation between time t and distance x for a moving body is given as t = mx2 + nx, where m and n are constants. The retardation of the motion is : (When v stands for velocity)Physics · Motion in A Straight Line · MCQ
- Q48.In a simple harmonic oscillation, what fraction of total mechanical energy is in the form of kinetic energy, when the particle is midway between mean and extreme position.Physics · Simple Harmonic Motion · MCQ
- Q49.A force acts on a body of mass 5 kg. If the body starts from rest, its position vector at time t = 10 s, will be :Physics · Laws of Motion · MCQ
- Q50.A prism of refractive index and angle of prism A is placed in the position of minimum angle of deviation. If minimum angle of deviation is also A, then in terms of refractive indexPhysics · Geometrical Optics · MCQ
- Q51.Two ions having same mass have charges in the ratio 1 : 2. They are projected normally in a uniform magnetic field with their speeds in the ratio 2 : 3. The ratio of the radii of their circular trajectories is :Physics · Magnetics · MCQ
- Q52.A 10 resistance is connected across 220V 50 Hz AC supply. The time taken by the current to change from its maximum value to the rms value is :Physics · Alternating Current · MCQ
- Q53.A balloon was moving upwards with a uniform velocity of 10 m/s. An object of finite mass is dropped from the balloon when it was at a height of 75 m from the ground level. The height of the balloon from the ground when object strikes the…Physics · Motion in A Straight Line · MCQ
- Q54.If qf is the free charge on the capacitor plates and qb is the bound charge on the dielectric slab of dielectric constant k placed between the capacitor plates, then bound charge qb an be expressed as :Physics · Capacitor · MCQ
- Q55.Consider a planet in some solar system which has a mass double the mass of earth and density equal to the average density of earth. If the weight of an object on earth is W, the weight of the same object on that planet will be :Physics · Gravitation · MCQ
- Q56.Two ideal electric dipoles A and B, having their dipole moment p1 and p2 respectively are placed on a plane with their centres at O as shown in the figure. At point C on the axis of dipole A, the resultant electric field is making an angle… Includes diagramPhysics · Electrostatics · MCQ
- Q57.Two spherical soap bubbles of radii r1 and r2 in vacuum combine under isothermal conditions. The resulting bubble has a radius equal to :Physics · Properties of Matter · MCQ
- Q58.The force is given in terms of time t and displacement x by the equation F = A cos Bx + C sin Dt The dimensional formula of is :Physics · Units and Measurements · MCQ
- Q59.An electron moving with speed v and a photon moving with speed c, have same D-Broglie wavelength. The ratio of kinetic energy of electron to that of photon is :Physics · Dual Nature of Radiation · MCQ
- Q60.The instantaneous velocity of a particle moving in a straight line is given as , where and are constants. The distance travelled by the particle between 1s and 2s is :Physics · Motion in A Straight Line · MCQ
- Q61.A ray of light entering from air into a denser medium of refractive index , as shown in figure. The light ray suffers total internal reflection at the adjacent surface as shown. The maximum value of angle should be… Includes diagramPhysics · Geometrical Optics · MCQ
- Q62.When radiation of wavelength is incident on a metallic surface, the stopping potential of ejected photoelectrons is 4.8 V. If the same surface is illuminated by radiation of double the previous wavelength, then the stopping…Physics · Dual Nature of Radiation · MCQ
- Q63.Two vectors and have equal magnitude. The magnitude of () is n times the magnitude of (+). The angle between …Physics · Vector Algebra · MCQ
- Q64.A system consists of two types of gas molecules A and B having same number density 2 1025/m3. The diameter of A and B are 10 and 5 respectively. They suffer collision at room temperature.…Physics · Heat and Thermodynamics · Numerical
- Q65.A light beam of wavelength 500 nm is incident on a metal having work function of 1.25 eV, placed in a magnetic field of intensity B. The electrons emitted perpendicular to the magnetic field B, with maximum kinetic energy are bent into…Physics · Dual Nature of Radiation · Numerical
- Q66.A 16 wire is bend to form a square loop. A 9V supply having internal resistance of 1 is connected across one of its sides. The potential drop across the diagonals of the square loop is …Physics · Current Electricity · Numerical
- Q67.Two circuits are shown in the figure (a) & (b). At a frequency of rad/s the average power dissipated in one cycle will be same in both the circuits. Includes diagramPhysics · Alternating Current · Numerical
- Q68.From the given data, the amount of energy required to break the nucleus of aluminium Al is x 10 3 J. Mass of neutron = 1.00866 u Mass of proton = 1.00726 u Mass of Aluminium nucleus =…Physics · Atoms and Nuclei · Numerical
- Q69.A force of F = (5y + 20) N acts on a particle. The work done by this force when the particle is moved from y = 0 m to y = 10 m is J.Physics · Work Power and Energy · Numerical
- Q70.A solid disc of radius 20 cm and mass 10 kg is rotating with an angular velocity of 600 rpm, about an axis normal to its circular plane and passing through its centre of mass. The retarding torque required to bring the disc at rest in 10 s…Physics · Rotational Motion · Numerical
- Q71.In a semiconductor, the number density of intrinsic charge carries at 27 C is 1.5 1016/m3. If the semiconductor is doped with impurity atom, the hole density increases to 4.5 1022/m3. The electron density in the…Physics · Electronic Devices · Numerical