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Physics · 2020 · Shift 2

18 questions from this JEE Advanced paper
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Physics · 2020 · Shift 2

18 questions from this JEE Advanced paper

Properties of Matter3 questionsElectrostatics3 questionsHeat and Thermodynamics3 questionsGeometrical Optics2 questionsWork Power and Energy1 questionsRotational Motion1 questionsAtoms and Nuclei1 questionsMotion1 questionsCurrent Electricity1 questionsCapacitor1 questionsElectromagnetic Induction1 questions
  1. Q37.A train with cross-sectional area St is moving with speed vt inside a long tunnel of cross-sectional area S0 (S0 = 4St). Assume that almost all the air (density ρ) in front of the train flows back between its sides and the walls of…
    Physics · Properties of Matter · Numerical
  2. Q38.Two large circular discs separated by a distance of 0.01 m are connected to a battery via a switch as shown in the figure. Charged oil drops of density 900 kg m−3 are released through a tiny hole at the center of the top disc. Once some… Includes diagram
    Physics · Electrostatics · Numerical
  3. Q39.A point charge q of mass m is suspended vertically by a string of length l. A point dipole of dipole moment p​ is now brought towards q from infinity so that the charge moves away. The final equilibrium position of the… Includes diagram
    Physics · Electrostatics · Numerical
  4. Q40.A hot air balloon is carrying some passengers, and a few sandbags of mass 1 kg each so that its total mass is 480 kg. Its effective volume giving the balloon its buoyancy is V. The balloon is floating at an equilibrium height of 100 m.…
    Physics · Properties of Matter · Numerical
  5. Q41.A thermally isolated cylindrical closed vessel of height 8 m is kept vertically. It is divided into two equal parts by a diathermic (perfect thermal conductor) frictionless partition of mass 8.3 kg. Thus the partition is held initially at… Includes diagram
    Physics · Heat and Thermodynamics · Numerical
  6. Q42.A large square container with thin transparent vertical walls and filled with water (refractive index 34​) is kept on a horizontal table. A student holds a thin straight wire vertically inside the water 12 cm from one of its… Includes diagram
    Physics · Geometrical Optics · Numerical
  7. Q43.A beaker of radius r is filled with water (refractive index 34​) up to a height H as shown in the figure on the left. The beaker is kept on a horizontal table rotating with angular speed ω. This makes the water surface… Includes diagram
    Physics · Geometrical Optics · Multiple correct
  8. Q44.A student skates up a ramp that makes an angle 30 ∘ with the horizontal. He/she starts (as shown in the figure) at the bottom of the ramp with speed v0 and wants to turn around over a semicircular path xyz of radius R during which… Includes diagram
    Physics · Work Power and Energy · Multiple correct
  9. Q45.A rod of mass m and length L, pivoted at one of its ends, is hanging vertically. A bullet of the same mass moving at speed v strikes the rod horizontally at a distance x from its pivoted end and gets embedded in it. The combined system now… Includes diagram
    Physics · Rotational Motion · Multiple correct
  10. Q46.In an X-ray tube, electrons emitted from a filament (cathode) carrying current I hit a target (anode) at a distance d from the cathode. The target is kept at a potential V higher than the cathode resulting in emission of continuous and…
    Physics · Atoms and Nuclei · Multiple correct
  11. Q47.Two identical non-conducting solid spheres of same mass and charge are suspended in air from a common point by two non-conducting, massless strings of same length. At equilibrium, the angle between the strings is α. The spheres are…
    Physics · Electrostatics · Multiple correct
  12. Q48.Starting at time t = 0 from the origin with speed 1 ms-1, a particle follows a two-dimensional trajectory in the x-y plane so that its coordinates are related by the equation y=2x2​. The x and y components of its…
    Physics · Motion · Multiple correct
  13. Q49.A spherical bubble inside water has radius R. Take the pressure inside the bubble and the water pressure to be p0. The bubble now gets compressed radially in an adiabatic manner so that its radius becomes (R − a). For a << R the…
    Physics · Heat and Thermodynamics · Numerical
  14. Q50.In the balanced condition, the values of the resistances of the four arms of a Wheatstone bridge are shown in the figure below. The resistance R3 has temperature coefficient 0.0004 ∘ C-1. If the temperature of R3 is increased by 100… Includes diagram
    Physics · Current Electricity · Numerical
  15. Q51.Two capacitors with capacitance values C1 = 2000 ± 10 pF and C2 = 3000 ± 15 pF are connected in series. The voltage applied across this combination is V = 5.00 ± 0.02 V. The percentage error in the calculation of the energy…
    Physics · Capacitor · Numerical
  16. Q52.A cubical solid aluminium (bulk modulus = −VdVdP​=70GPa) block has an edge length of 1 m on the surface of the earth. It is kept on the floor of a 5 km deep ocean. Taking the average density of water and the acceleration…
    Physics · Properties of Matter · Numerical
  17. Q53.The inductors of two LR circuits are placed next to each other, as shown in the figure. The values of the self-inductance of the inductors, resistors, mutual-inductance and applied voltages are specified in the given circuit. After both… Includes diagram
    Physics · Electromagnetic Induction · Numerical
  18. Q54.A container with 1 kg of water in it is kept in sunlight, which causes the water to get warmer than the surroundings. The average energy per unit time per unit area received due to the sunlight is 700 Wm − 2 and it is absorbed by the…
    Physics · Heat and Thermodynamics · Numerical