Physics · 2020 · 7 Jan · Shift 2
20 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 · 7 Jan · Shift 2
20 questions from this JEE Main paper
Rotational Motion2 questionsVector Algebra1 questionsHeat and Thermodynamics2 questionsCapacitor1 questionsGravitation1 questionsUnits and Measurements1 questionsElectromagnetic Waves1 questionsWave Optics1 questionsWork Power and Energy1 questionsLaws of Motion1 questionsCurrent Electricity1 questionsElectronic Devices1 questionsProperties of Matter1 questionsGeometrical Optics1 questionsElectromagnetic Induction1 questionsAlternating Current1 questionsMagnetics1 questionsDual Nature of Radiation1 questions
- Q39.Consider a uniform cubical box of side a on a rough floor that is to be moved by applying minimum possible force F at a point b above its centre of mass (see figure). If the coefficient of friction is = 0.4, the maximum possible value… Includes diagramPhysics · Rotational Motion · Numerical
- Q40.The sum of two forces and is such that . The angle (in degrees) that the resultant of 2 …Physics · Vector Algebra · Numerical
- Q41.M grams of steam at 100oC is mixed with 200 g of ice at its melting point in a thermally insulated container. If it produced liquid water at 40oC [heat of vaporization of water is 540 cal/g and heat of fusion of ice is 80 cal/g] the value…Physics · Heat and Thermodynamics · Numerical
- Q42.A 60 pF capacitor is fully charged by a 20 V supply. It is then disconnected from the supply and is conneced to another uncharged 60 pF capacitor in parallel. The electrostatic energy that is lost in this process by the time the charge is…Physics · Capacitor · Numerical
- Q43.A box weight 196 N on a spring balance at the north pole. Its weight recorded on the same balance if it is shifted to the equator is close to (Take g = 10 ms–2 at the north pole and the radius of the earth = 6400 km) :Physics · Gravitation · MCQ
- Q44.The dimension of , where B is magnetic field and is the magnetic permeability of vacuum, is :Physics · Units and Measurements · MCQ
- Q45.Under an adiabatic process, the volume of an ideal gas gets doubled. Consequently the mean collision time between the gas molecule changes from to . If for this gas then a good…Physics · Heat and Thermodynamics · MCQ
- Q46.The electric field of a plane electromagnetic wave is given by At t = 0, a positively charged particle is at the point (x, y, z) =…Physics · Electromagnetic Waves · MCQ
- Q47.In a Young's double slit experiment, the separation between the slits is 0.15 mm. in the experiment, a source of light of wavelengh 589 nm is used and the interference pattern is observed on a screen kept 1.5 m away. The separation between…Physics · Wave Optics · MCQ
- Q48.An elevator in a building can carry a maximum of 10 persons, with the average mass of each person being 68 kg, The mass of the elevator itself is 920 kg and it moves with a constant speed of 3 m/s. The frictional force opposing the motion…Physics · Work Power and Energy · MCQ
- Q49.A mass of 10 kg is suspended by a rope of length 4 m, from the ceiling. A force F is applied horizontally at the mid point of the rope such that the top half of the rope makes an angle of 45o with the vertical. Then F equal : (Take g = 10…Physics · Laws of Motion · MCQ
- Q50.In a building there are 15 bulbs of 45 W, 15 bulbs of 100 W, 15 small fans of 10 W and 2 heaters of 1 kW. The voltage of electric main is 220 V. The minimum fuse capacity (rated value) of the building will be :Physics · Current Electricity · MCQ
- Q51.In the figure, potential difference between A and B is : Includes diagramPhysics · Electronic Devices · MCQ
- Q52.An ideal fluid flows (laminar flow) through a pipe of non-uniform diameter. The maximum and minimum diameters of the pipes are 6.4 cm and 4.8 cm, respectively. The ratio of the minimum and the maximum velocities of fluid in this pipe is :Physics · Properties of Matter · MCQ
- Q53.A thin lens made of glass (refractive index = 1.5) of focal length f = 16 cm is immersed in a liquid of refractive index 1.42. If its focal length in liquid is f1 , then the ratio is closest to the integer :Physics · Geometrical Optics · MCQ
- Q54.A planar loop of wire rotates in a uniform magnetic field. Initially at t = 0, the plane of the loop is perpendicular to the magnetic field. If it rotates with a period of 10 s about an axis in its plane then the magnitude of induced emf…Physics · Electromagnetic Induction · MCQ
- Q55.An emf of 20 V is applied at time t = 0 to a circuit containing in series 10 mH inductor and 5 resistor. The ratio of the currents at time t = and at t = 40 s is close to : (Take e2 = 7.389)Physics · Alternating Current · MCQ
- Q56.A particle of mass m and charge q has an initial velocity . If an electric field and magnetic field act on the particle, its…Physics · Magnetics · MCQ
- Q57.Mass per unit area of a circular disc of radius depends on the distance r from its centre as = A + Br . The moment of inertia of the disc about the axis, perpendicular to the plane and assing through its…Physics · Rotational Motion · MCQ
- Q58.An electron (of mass m) and a photon have the same energy E in the range of a few eV. The ratio of the de-Broglie wavelength associated with the electron and the wavelength of the photon is (c = speed of light in vaccuum)Physics · Dual Nature of Radiation · MCQ