Physics · 2020 · 2 Sep · Shift 1
23 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 · 2020 · 2 Sep · Shift 1
23 questions from this JEE Main paper
Units and Measurements2 questionsGeometrical Optics1 questionsAtoms and Nuclei1 questionsCurrent Electricity1 questionsCenter of Mass1 questionsHeat and Thermodynamics2 questionsGravitation1 questionsMotion in A Straight Line1 questionsWork Power and Energy1 questionsRotational Motion2 questionsCircular Motion1 questionsWaves1 questionsWave Optics1 questionsProperties of Matter1 questionsElectrostatics1 questionsElectromagnetic Waves1 questionsCapacitor1 questionsElectromagnetic Induction1 questionsDual Nature of Radiation1 questionsMagnetics1 questions
- Q38.The least count of the main scale of a vernier callipers is 1 mm. Its vernier scale is divided into 10 divisions and coincide with 9 divisions of the main scale. When jaws are touching each other, the 7th division of vernier scale…Physics · Units and Measurements · MCQ
- Q39.A spherical mirror is obtained as shown in the figure from a hollow glass sphere. If an object is positioned in front of the mirror, what will be the nature and magnification of the image of the object? (Figure drawn as schematic and not… Includes diagramPhysics · Geometrical Optics · MCQ
- Q40.In a reactor, 2 kg of 92U235 fuel is fully used up in 30 days. The energy released per fission is 200 MeV. Given that the Avogadro number, N = 6.023 1026 per kilo mole and 1 eV = 1.6 × 10–19 J. The power output of the reactor is…Physics · Atoms and Nuclei · MCQ
- Q41.Consider four conducting materials copper, tungsten, mercury and aluminium with resistivity C, T, M and A respectively. Then :Physics · Current Electricity · MCQ
- Q42.A particle of mass m with an initial velocity collides perfectly elastically with a mass 3 m at rest. It moves with a velocity after collision, then, v is given by :Physics · Center of Mass · MCQ
- Q43.A gas mixture consists of 3 moles of oxygen and 5 moles of argon at temperature T. Assuming the gases to be ideal and the oxygen bond to be rigid, the total internal energy (in units of RT) of the mixture is :Physics · Heat and Thermodynamics · MCQ
- Q44.The mass density of a spherical galaxy varies as over a large distance ‘r’ from its centre. In that region, a small star is in a circular orbit of radius R. Then the period of revolution, T depends on R as :Physics · Gravitation · MCQ
- Q45.Train A and train B are running on parallel tracks in the opposite directions with speeds of 36 km/hour and 72 km/hour, respectively. A person is walking in train A in the direction opposite to its motion with a speed of 1.8 km/ hour.…Physics · Motion in A Straight Line · MCQ
- Q46.If speed V, area A and force F are chosen as fundamental units, then the dimension of Young’s modulus will bePhysics · Units and Measurements · MCQ
- Q47.A small block starts slipping down from a point B on an inclined plane AB, which is making an angle with the horizontal section BC is smooth and the remaining section CA is rough with a coefficient of friction . It is found… Includes diagramPhysics · Work Power and Energy · Numerical
- Q48.A uniform cylinder of mass M and radius R is to be pulled over a step of height a (a < R) by applying a force F at its centre ‘O’ perpendicular to the plane through the axes of the cylinder on the edge of the step (see figure). The… Includes diagramPhysics · Rotational Motion · MCQ
- Q49.Shown in the figure is rigid and uniform one meter long rod AB held in horizontal position by two strings tied to its ends and attached to the ceiling. The rod is of mass ‘m’ and has another weight of mass 2 m hung at a distance of 75 cm… Includes diagramPhysics · Rotational Motion · MCQ
- Q50.A bead of mass m stays at point P(a, b) on a wire bent in the shape of a parabola y = 4Cx2 and rotating with angular speed (see figure). The value of is (neglect friction) : Includes diagramPhysics · Circular Motion · MCQ
- Q51.Two identical strings X and Z made of same material have tension TX and TZ in them. If their fundamental frequencies are 450 Hz and 300 Hz, respectively, then the ratio TX/TZ isPhysics · Waves · MCQ
- Q52.Interference fringes are observed on a screen by illuminating two thin slits 1 mm apart with a light source ( = 632.8 nm). The distance between the screen and the slits is 100 cm. If a bright fringe is observed on a screen at a…Physics · Wave Optics · MCQ
- Q53.A cylindrical vessel containing a liquid is rotated about its axis so that the liquid rises at its sides as shown in the figure. The radius of vessel is 5 cm and the angular speed of rotation is rad s–1. The difference in the… Includes diagramPhysics · Properties of Matter · MCQ
- Q54.A charged particle (mass m and charge q) moves along X-axis with velocity V0. When it passes through the origin it enters a region having uniform electric field which extends upto x = d. Equation of path… Includes diagramPhysics · Electrostatics · MCQ
- Q55.A plane electromagnetic wave, has frequency of 2.0 1010 Hz and its energy density is 1.02 10–8 J/m3 in vacuum. The amplitude of the magnetic field of the wave is close to ( …Physics · Electromagnetic Waves · MCQ
- Q56.A 5 F capacitor is charged fully by a 220 V supply. It is then disconnected from the supply and is connected in series to another uncharged 2.5 F capacitor. If the energy change during the charge redistribution is …Physics · Capacitor · Numerical
- Q57.A circular coil of radius 10 cm is placed in a uniform magnetic field of 3.0 10–5 T with its plane perpendicular to the field initially. It is rotated at constant angular speed about an axis along the diameter of coil and…Physics · Electromagnetic Induction · Numerical
- Q58.When radiation of wavelength is used to illuminate a metallic surface, the stopping potential is V. When the same surface is illuminated with radiation of wavelength 3 , the stopping potential is . If the…Physics · Dual Nature of Radiation · Numerical
- Q59.A beam of protons with speed 4 × 105 ms–1 enters a uniform magnetic field of 0.3 T at an angle of 60° to the magnetic field. The pitch of the resulting helical path of protons is close to : (Mass of the proton = 1.67 10–27 kg,…Physics · Magnetics · MCQ
- Q60.An engine takes in 5 moles of air at 20oC and 1 atm, and compresses it adiabatically to 1/10th of the original volume. Assuming air to be a diatomic ideal gas made up of rigid molecules, the change in its internal energy during this…Physics · Heat and Thermodynamics · Numerical