Physics · 2020 · 9 Jan · 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 · 2020 · 9 Jan · Shift 2
25 questions from this JEE Main paper
Current Electricity1 questionsElectrostatics1 questionsWave Optics1 questionsElectronic Devices3 questionsHeat and Thermodynamics2 questionsDual Nature of Radiation1 questionsProperties of Matter2 questionsUnits and Measurements1 questionsGravitation1 questionsRotational Motion1 questionsAtoms and Nuclei1 questionsMotion in A Plane1 questionsMagnetics2 questionsCenter of Mass2 questionsGeometrical Optics1 questionsAlternating Current1 questionsElectromagnetic Waves1 questionsSimple Harmonic Motion1 questionsWaves1 questions
- Q41.In a meter bridge experiment S is a standard resistance. R is a resistance wire. It is found that balancing length is = 25 cm. If R is replaced by a wire of half length and half diameter that of R of same material, then the balancing… Includes diagramPhysics · Current Electricity · Numerical
- Q42.An electric field N/C passes through the box shown in figure. The flux of the electric field through surfaces ABCD and BCGF are marked as and … Includes diagramPhysics · Electrostatics · Numerical
- Q43.In a Young's double slit experiment 15 fringes are observed on a small portion of the screen when light of wavelength 500 nm is used. Ten fringes are observed on the same section of the screen when another light source of wavelength …Physics · Wave Optics · Numerical
- Q44.The circuit shown below is working as a 8 V dc regulated voltage source. When 12 V is used as input, the power dissipated (in mW) in each diode is; (considering both zener diodes are identical) . Includes diagramPhysics · Electronic Devices · Numerical
- Q45.Starting at temperature 300 K, one mole of an ideal diatomic gas (= 1.4) is first compressed adiabatically from volume V1 to V2 =. It is then allowed to expand isobarically to volume 2V2. If all the processes…Physics · Heat and Thermodynamics · Numerical
- Q46.An electron of mass m and magnitude of charge |e| initially at rest gets accelerated by a constant electric field E. The rate of change of de-Broglie wavelength of this electron at time t ignoring relativistic effects is :Physics · Dual Nature of Radiation · MCQ
- Q47.Two steel wires having same length are suspended from a ceiling under the same load. If the ratio of their energy stored per unit volume is 1 : 4, the ratio of their diameters is:Physics · Properties of Matter · MCQ
- Q48.For the four sets of three measured physical quantities as given below. Which of the following options is correct ? (i) A1 = 24.36, B1 = 0.0724, C1 = 256.2 (ii) A2 = 24.44, B2 = 16.082, C2 = 240.2 (iii) A3 = 25.2, B3 = 19.2812, C3 =…Physics · Units and Measurements · MCQ
- Q49.Planet A has mass M and radius R. Planet B has half the mass and half the radius of Planet A. If the escape velocities from the Planets A and B are vA and vB, respectively, then . The value of n is :Physics · Gravitation · MCQ
- Q50.A uniformly thick wheel with moment of inertia I and radius R is free to rotate about its centre of mass (see fig). A massless string is wrapped over its rim and two blocks of masses m1 and m2 (m1 m2) are attached to the ends of the… Includes diagramPhysics · Rotational Motion · MCQ
- Q51.Two identical capacitors A and B, charged to the same potential 5V are connected in two different circuits as shown below at time t = 0. If the charge on capacitors A and B at time t = CR is QA and QB respectively, then (Here e is the base… Includes diagramPhysics · Electronic Devices · MCQ
- Q52.The energy required to ionise a hydrogen like ion in its ground state is 9 Rydbergs. What is the wavelength of the radiation emitted when the electron in this ion jumps from the second excited state to the ground state ?Physics · Atoms and Nuclei · MCQ
- Q53.A particle starts from the origin at t = 0 with an initial velocity of 3.0 m/s and moves in the x-y plane with a constant acceleration m/s2 . The x-coordinate of the particle at…Physics · Motion in A Plane · MCQ
- Q54.An electron gun is placed inside a long solenoid of radius R on its axis. The solenoid has n turns/length and carries a current I. The electron gun shoots an electron along the radius of the solenoid with speed v. If the electron does not… Includes diagramPhysics · Magnetics · MCQ
- Q55.A particle of mass m is projected with a speed u from the ground at an angle w.r.t. horizontal (x-axis). When it has reached its maximum height, it collides completely inelastically with another particle of the…Physics · Center of Mass · MCQ
- Q56.Two gases-argon (atomic radius 0.07 nm, atomic weight 40) and xenon (atomic radius 0.1 nm, atomic weight 140) have the same number density and are at the same temperature. The raito of their respective mean free times is closest to :Physics · Heat and Thermodynamics · MCQ
- Q57.There is a small source of light at some depth below the surface of water (refractive index = ) in a tank of large cross sectional surface area. Neglecting any reflection from the bottom and absorption by water, percentage of…Physics · Geometrical Optics · MCQ
- Q58.In LC circuit the inductance L = 40 mH and capacitance C = 100 F. If a voltage V(t) = 10sin(314t) is applied to the circuit, the current in the circuit is given as :Physics · Alternating Current · MCQ
- Q59.The current i in the network is : Includes diagramPhysics · Electronic Devices · MCQ
- Q60.A small circular loop of conducting wire has radius a and carries current I. It is placed in a uniform magnetic field B perpendicular to its plane such that when rotated slightly about its diameter and released, it starts performing simple…Physics · Magnetics · MCQ
- Q61.A small spherical droplet of density d is floating exactly half immersed in a liquid of density and surface tension T. The radius of the droplet is (take note that the surface tension applies an upward force on the droplet) :Physics · Properties of Matter · MCQ
- Q62.A plane electromagnetic wave is propagating along the direction , with its polarization along the direction . The correct form of the magnetic field of the wave would be (here B0…Physics · Electromagnetic Waves · MCQ
- Q63.A rod of length L has non-uniform linear mass density given by (x) = , where a and b are constants and 0 x L. The value of x for the centre of mass of the rod is at :Physics · Center of Mass · MCQ
- Q64.A spring mass system (mass m, spring constant k and natural length ) rest in equilibrium on a horizontal disc. The free end of the spring is fixed at the centre of the disc. If the disc together with spring mass system, rotates about…Physics · Simple Harmonic Motion · MCQ
- Q65.A wire of length L and mass per unit length 6.0 × 10–3 kgm–1 is put under tension of 540 N. Two consecutive frequencies that it resonates at are : 420 Hz and 490 Hz. Then L in meters is :Physics · Waves · MCQ