Physics · 2019 · 8 Apr · Shift 1
28 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 · 2019 · 8 Apr · Shift 1
28 questions from this JEE Main paper
Alternating Current1 questionsCenter of Mass2 questionsDual Nature of Radiation1 questionsWave Optics1 questionsHeat and Thermodynamics2 questionsAtoms and Nuclei1 questionsUnits and Measurements1 questionsWork Power and Energy1 questionsElectromagnetic Waves1 questionsGravitation1 questionsElectrostatics2 questionsGeometrical Optics2 questionsWaves1 questionsProperties of Matter3 questionsCurrent Electricity1 questionsMotion in A Plane1 questionsRotational Motion1 questionsElectromagnetic Induction1 questionsMagnetics2 questionsElectronic Devices1 questionsCapacitor1 questions
- Q46.An alternating voltage v(t) = 220 sin 100 t volt is applied to a purely resistance load of 50 . The time taken for the current to rise from half of the peak value to the peak value is :Physics · Alternating Current · MCQ
- Q47.If 1022 gas molecules each of mass 10–26 kg collide with a surface (perpendicular to it) elastically per second over an area 1 m2 with a speed 104 m/s, the pressure exerted by the gas molecules will be of the order of :Physics · Center of Mass · MCQ
- Q48.Two particles move at right angle to each other. Their de-Broglie wavelengths are and respectively. The particles suffer perfectly inelastic collision. The de-Broglie wavelength of the final particle,…Physics · Dual Nature of Radiation · MCQ
- Q49.In an interference experiment the ratio of amplitudes of coherent waves is . The ratio of maximum and minimum intensities of fringes will be :Physics · Wave Optics · MCQ
- Q50.A thermally insulated vessel contains 150g of water at 0°C. Then the air from the vessel is pumped out adiabatically. A fraction of water turns into ice and the rest evaporates at 0°C itself. The mass of evaporated water will be closest to…Physics · Heat and Thermodynamics · MCQ
- Q51.Radiation coming from transitions n = 2 to n = 1 of hydrogen atoms fall on He+ ions in n = 1 and n = 2 states. The possible transition of helium ions as they absorb energy from the radiation is :Physics · Atoms and Nuclei · MCQ
- Q52.In SI units, the dimensions of is :Physics · Units and Measurements · MCQ
- Q53.A particle moves in one dimension from rest under the influence of a force that varies with the distance travelled by the particle as shown in the figure. The kinetic energy of the particle after it has travelled 3m is : Includes diagramPhysics · Work Power and Energy · MCQ
- Q54.A plane electromagnetic wave travels in free space along the x-direction. The electric field component of the wave at a particular point of space and time is E = 6 V m–1 along y-direction. Its corresponding magnetic field component, B…Physics · Electromagnetic Waves · MCQ
- Q55.Four identical particles of mass M are located at the corners of a square of side 'a'. What should be their speed if each of them revolves under the influence of other's gravitational field in a circular orbit circumscribing the square? Includes diagramPhysics · Gravitation · MCQ
- Q56.A solid conducting sphere, having a charge Q, is surrounded by an uncharged conducting hollow spherical shell. Let the potential difference between the surface of the solid sphere and that of the outer surface of the hollow shell be V. If…Physics · Electrostatics · MCQ
- Q57.In figure, the optical fiber is = 2m long and has a diameter of d = 20 μm. If a ray of light is incident on one end of the fiber at angle = 40°, the number of reflection it makes before emerging from the other end is close… Includes diagramPhysics · Geometrical Optics · MCQ
- Q58.A wire of length 2L, is made by joining two wires A and B of same length but different radii r and 2r and made of the same material. It is vibrating at a frequency such that the joint of the two wires forms a node. If the number of… Includes diagramPhysics · Waves · MCQ
- Q59.A steel wire having a radius of 2.0 mm, carrying a load of 4 kg, is hanging from a ceiling. Given that g = 3.1 p ms–2, what will be the tensile stress that would be developed in the wire ?Physics · Properties of Matter · MCQ
- Q60.For the circuit shown, with R1 = 1.0W, R2 = 2.0 W, E1 = 2 V and E2 = E3 = 4 V, the potential difference between the points 'a' and 'b' is approximately (in V): Includes diagramPhysics · Current Electricity · MCQ
- Q61.Ship A is sailing towards north-east with velocity km/hr where points east and , north. Ship B is at…Physics · Motion in A Plane · MCQ
- Q62.A thin circular plate of mass M and radius R has its density varying as (r) = 0r with 0 as constant and r is the distance from its centre. The moment of Inertia of the circular plate about an axis perpendicular to the…Physics · Rotational Motion · MCQ
- Q63.A 20 Henry inductor coil is connected to a 10 ohm resistance in series as shown in figure. The time at which rate of dissipation of energy (joule's heat) across resistance is equal to the rate at which magnetic energy is stored in the… Includes diagramPhysics · Electromagnetic Induction · MCQ
- Q64.An upright object is placed at a distance of 40 cm in front of a convergent lens of focal length 20 cm. A convergent mirror of focal length 10 cm is placed at a distance of 60 cm on the other side of the lens. The position and size of the…Physics · Geometrical Optics · MCQ
- Q65.A thin strip 10 cm long is on a U shaped wire of negligible resistance and it is connected to a spring of spring constant 0.5 Nm–1 (see figure). The assembly is kept in a uniform magnetic field of 0.1 T. If the strip is pulled from its… Includes diagramPhysics · Magnetics · MCQ
- Q66.The reverse breakdown voltage of a Zener diode is 5.6 V in the given circuit. The current IZ through the Zener is : Includes diagramPhysics · Electronic Devices · MCQ
- Q67.Water from a pipe is coming at a rate of 100 litres per minute. If the radius of the pipe is 5 cm, the Reynolds number for the flow is of the order of : (density of water = 1000 kg/m3, coefficient of viscosity of water = 1mPas)Physics · Properties of Matter · MCQ
- Q68.The bob of a simple pendulum has mass 2g and a charge of 5.0 μC. It is at rest in a uniform horizontal electric field of intensity 2000 V/m. At equilibrium, the angle that the pendulum makes with the vertical is : (take g = 10 m/s2)Physics · Electrostatics · MCQ
- Q69.A circular coil having N turns and radius r carries a current I. It is held in the XZ plane in a magnetic field B . The torque on the coil due to the magnetic field is :Physics · Magnetics · MCQ
- Q70.A boy's catapult is made of rubber cord which is 42 cm long, with 6 mm diameter of cross-section and of negligible mass. The boy keeps a stone weighing 0.02kg on it and stretches the cord by 20 cm by applying a constant force. When…Physics · Properties of Matter · MCQ
- Q71.Voltage rating of a parallel plate capacitor is 500V. Its dielectric can withstand a maximum electric field of 106 V/m. The plate area is 10–4 m2. What is the dielectric constant is the capacitance is 15 pF? (given 0 = 8.86 ×…Physics · Capacitor · MCQ
- Q72.Two identical beakers A and B contain equal volumes of two different liquids at 60°C each and left to cool down. Liquid in A has density of 8 × 102 kg/m3 and specific heat of 2000 J kg–1 K–1 while liquid in B has density of 103 kg m–3 and…Physics · Heat and Thermodynamics · MCQ
- Q73.Four particles A, B, C and D with masses mA = m, mB = 2m, mC = 3m and mD = 4m are at the corners of a square. They have accelerations of equal magnitude with directions as shown. The acceleration of the centre of mass of the particles is : Includes diagramPhysics · Center of Mass · MCQ