Physics · 2020 · 9 Jan · Shift 1
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 · 2020 · 9 Jan · Shift 1
25 questions from this JEE Main paper
Electromagnetic Induction1 questionsElectronic Devices1 questionsRotational Motion3 questionsMotion in A Straight Line1 questionsProperties of Matter1 questionsElectrostatics2 questionsWaves1 questionsMagnetics2 questionsHeat and Thermodynamics2 questionsCurrent Electricity1 questionsCenter of Mass1 questionsUnits and Measurements2 questionsDual Nature of Radiation2 questionsWork Power and Energy1 questionsGravitation1 questionsElectromagnetic Waves1 questionsGeometrical Optics2 questions
- Q43.In a fluorescent lamp choke (a small transformer) 100 V of reverse voltage is produced when the choke current changes uniformly from 0.25 A to 0 in a duration of 0.025 ms. The self-inductance of the choke (in mH) is estimated to be …Physics · Electromagnetic Induction · Numerical
- Q44.Both the diodes used in the circuit shown are assumed to be ideal and have negligible resistance when these are forward biased. Built in potential in each diode is 0.7 V. For the input voltages shown in the figure, the voltage (in Volts)… Includes diagramPhysics · Electronic Devices · Numerical
- Q45.A body of mass m = 10 kg is attached to one end of a wire of length 0.3 m. The maximum angular speed (in rad s–1) with which it can be rotated about its other end in space station is : (Breaking stress of wire = 4.8 × 107 Nm–2 and area of…Physics · Rotational Motion · Numerical
- Q46.The distance x covered by a particle in one dimensional motion varies with time t as x2 = at2 + 2bt + c. If the acceleration of the particle depends on x as x–n, where n is an integer, the value of n isPhysics · Motion in A Straight Line · Numerical
- Q47.One end of a straight uniform 1m long bar is pivoted on horizontal table. It is released from rest when it makes an angle 30º from the horizontal (see figure). Its angular speed when it hits the table is given as s-1, where n is… Includes diagramPhysics · Rotational Motion · Numerical
- Q48.Water flows in a horizontal tube (see figure). The pressure of water changes by 700 Nm–2 between A and B where the area of cross section are 40 cm2 and 20 cm2, respectively. Find the rate of flow of water through the tube. (density of… Includes diagramPhysics · Properties of Matter · MCQ
- Q49.Three solid spheres each of mass m and diameter d are stuck together such that the lines connecting the centres form an equilateral triangle of side of length d. The ratio I0/IA of moment of inertia I0 of the system about an axis passing… Includes diagramPhysics · Rotational Motion · MCQ
- Q50.An electric dipole of moment C.m is at the origin (0, 0, 0). The electric field due to this dipole at …Physics · Electrostatics · MCQ
- Q51.Three harmonic waves having equal frequency and same intensity , have phase angles 0, and respectively. When they are superimposed the intensity of the resultant wave is close to :Physics · Waves · MCQ
- Q52.A charged particle of mass 'm' and charge 'q' moving under the influence of uniform electric field and a uniform magnetic field follows a trajectory from point P to Q as shown in figure. The… Includes diagramPhysics · Magnetics · MCQ
- Q53.Which of the following is an equivalent cyclic process corresponding to the thermodynamic cyclic given in the figure ? where, 1 2 is adiabatic. (Graphs are schematic and are not to scale) Includes diagramPhysics · Heat and Thermodynamics · MCQ
- Q54.In the given circuit diagram, a wire is joining points B and D. The current in this wire is : Includes diagramPhysics · Current Electricity · MCQ
- Q55.Two particles of equal mass m have respective initial velocities and . They collide completely inelastically. The energy lost in the process is :Physics · Center of Mass · MCQ
- Q56.If the screw on a screw-gauge is given six rotations, it moves by 3 mm on the main scale. If there are 50 divisions on the circular scale the least count of the screw gauge is :Physics · Units and Measurements · MCQ
- Q57.Consider two ideal diatomic gases A and B at some temperature T. Molecules of the gas A are rigid, and have a mass m. Molecules of the gas B have an additional vibrational mode, and have a mass . The ratio of the specific…Physics · Heat and Thermodynamics · MCQ
- Q58.A particle moving with kinetic energy E has de Broglie wavelength . If energy E is added to its energy, the wavelength become /2. Value of E, is :Physics · Dual Nature of Radiation · MCQ
- Q59.Consider a force . The work done by this force in moving a particle from point A(1, 0) to B(0, 1) along the line segment is : (all quantities are in SI units) Includes diagramPhysics · Work Power and Energy · MCQ
- Q60.A body A of mass m is moving in a circular orbit of radius R about a planet. Another body B of mass collides with A with a velocity which is half the instantaneous velocity …Physics · Gravitation · MCQ
- Q61.Consider a sphere of radius R which carries a uniform charge density . If a sphere of radius is carved out of it, as shown, the ratio … Includes diagramPhysics · Electrostatics · MCQ
- Q62.The electric fields of two plane electromagnetic plane waves in vacuum are given by and …Physics · Electromagnetic Waves · MCQ
- Q63.A long, straight wire of radius a carries a current distributed uniformly over its cross-section. The ratio of the magnetic fields due to the wire at distance and 2 , respectively from the axis of the wire is :Physics · Magnetics · MCQ
- Q64.Radiation, with wavelength 6561 falls on a metal surface to produce photoelectrons. The electrons are made to enter a uniform magnetic field of 3 × 10–4 T. If the radius of the largest circular path followed by the…Physics · Dual Nature of Radiation · MCQ
- Q65.The aperture diameter of a telescope is 5m. The separation between the moon and the earth is 4 × 105 km. With light of wavelength of 5500 , the minimum separation between objects on the surface of moon, so that they are…Physics · Geometrical Optics · MCQ
- Q66.A vessel of depth 2h is half filled with a liquid of refractive index and the upper half with another liquid of refractive index . The liquids are immiscible. The apparent depth of the inner surface of the bottom of…Physics · Geometrical Optics · MCQ
- Q67.A quantity f is given by where c is speed of light, G universal gravitational constant and h is the Planck's constant. Dimension of f is that of :Physics · Units and Measurements · MCQ