Physics · 2019 · 12 Apr · Shift 2
26 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 · 12 Apr · Shift 2
26 questions from this JEE Main paper
Electromagnetic Waves1 questionsMagnetics2 questionsProperties of Matter3 questionsWaves2 questionsCurrent Electricity1 questionsLaws of Motion2 questionsHeat and Thermodynamics2 questionsAtoms and Nuclei2 questionsCircular Motion1 questionsWave Optics1 questionsElectrostatics1 questionsAlternating Current1 questionsGeometrical Optics1 questionsMotion in A Straight Line1 questionsCapacitor1 questionsMotion in A Plane1 questionsElectronic Devices1 questionsCenter of Mass1 questionsGravitation1 questions
- Q41.A plane electromagnetic wave having a frequency v = 23.9 GHz propagates along the positive z-direction in free space. The peak value of the Electric Field is 60 V/m. Which among the following is the acceptable magnetic field component in…Physics · Electromagnetic Waves · MCQ
- Q42.An electron, moving along the x-axis with an initial energy of 100 eV, enters a region of magnetic field at S (See figure). The field extends between x = 0 and x… Includes diagramPhysics · Magnetics · MCQ
- Q43.The number density of molecules of a gas depends on their distance r from the origin as, . Then the total number of molecules is proportional to :Physics · Properties of Matter · MCQ
- Q44.A small speaker delivers 2 W of audio output. At what distance from the speaker will one detect 120 dB intensity sound ? [Given reference intensity of sound as 10–12 W/m2 ]Physics · Waves · MCQ
- Q45.A tuning fork of frequency 480 Hz is used in an experiment for measuring speed of sound (v) in air by resonance tube method. Resonance is observed to occur at two successive lengths of the air column, l1 = 30 cm and l2 = 70 cm. Then, v is…Physics · Waves · MCQ
- Q46.A moving coil galvanometer, having a resistance G, produces full scale deflection when a current Ig flows through it. This galvanometer can be converted into (i) an ammeter of range 0 to I0(I0 > Ig) by connecting a shunt resistance RA…Physics · Current Electricity · MCQ
- Q47.A solid sphere, of radius R acquires a terminal velocity v1 when falling (due to gravity) through a viscous fluid having a coefficient of viscosity . The sphere is broken into 27 identical solid spheres. If each of these spheres acquires a…Physics · Properties of Matter · MCQ
- Q48.A block of mass 5 kg is (i) pushed in case (A) and (ii) pulled in case (B), by a force F = 20 N, making an angle of 30o with the horizontal, as shown in the figures. The coefficient of friction between the block and floor is = 0.2.… Includes diagramPhysics · Laws of Motion · MCQ
- Q49.One kg of water, at 20oC, heated in an electric kettle whose heating element has a mean (temperature averaged) resistance of 20 . The rms voltage in the mains is 200 V. Ignoring heat loss from the kettle, time taken for water to…Physics · Heat and Thermodynamics · MCQ
- Q50.The electron in a hydrogen atom first jumps from the third excited state to the second excited state and subsequently to the first excited state. The ratio of the respective wavelengths, , of the…Physics · Atoms and Nuclei · MCQ
- Q51.A uniform cylindrical rod of length L and radius r, is made from a material whose Young’s modulus of Elasticity equals Y. When this rod is heated by temperature T and simultaneously subjected to a net longitudinal compressional force F,…Physics · Properties of Matter · MCQ
- Q52.A diatomic gas with rigid molecules does 10 J of work when expanded at constant pressure. What would be the heat energy absorbed by the gas, in this process ?Physics · Heat and Thermodynamics · MCQ
- Q53.A smooth wire of length 2 r is bent into a circle and kept in a vertical plane. A bead can slide smoothly on the wire. When the circle is rotating with angular speed about the vertical diameter AB, as shown in figure, the… Includes diagramPhysics · Circular Motion · MCQ
- Q54.A system of three polarizers P1, P2, P3 is set up such that the pass axis of P3 is crossed with respect to that of P1. The pass axis of P2 is inclined at 60o to the pass axis of P3. When a beam of unpolarized light of intensity I0 is…Physics · Wave Optics · MCQ
- Q55.Let a total charge 2Q be distributed in a sphere of radius R, with the charge density given by (r) = kr, where r is the distance from the centre. Two charges A and B, of –Q each, are placed on diametrically opposite points, at equal…Physics · Electrostatics · MCQ
- Q56.Consider the LR circuit shown in the figure. If the switch S is closed at t = 0 then the amount of charge that passes through the battery between t = 0 and t = is : Includes diagramPhysics · Alternating Current · MCQ
- Q57.Consider an electron in a hydrogen atom revolving in its second excited state (having radius 4.65 ). The de-Broglie wavelength of this electron is :Physics · Atoms and Nuclei · MCQ
- Q58.A transparent cube of side, made of a material of refractive index 2, is immersed in a liquid of refractive index 1( 1 < 2). A ray is incident on the face AB at an angle (shown in the figure). Total… Includes diagramPhysics · Geometrical Optics · MCQ
- Q59.A particle is moving with speed v = b along positive x-axis. Calculate the speed of the particle at time t =(assume that the particle is at origin t = 0)Physics · Motion in A Straight Line · MCQ
- Q60.In the given circuit, the charge on 4 F capacitor will be : Includes diagramPhysics · Capacitor · MCQ
- Q61.Two particles are projected from the same point with the same speed u such that they have the same range R, but different maximum heights, h1 and h2. Which of the following is correct ?Physics · Motion in A Plane · MCQ
- Q62.Figure shows a DC voltage regulator circuit, with a Zener diode of breakdown voltage = 6V. If the unregulated input voltage varies between 10 V to 16 V, then what is maximum Zener current? Includes diagramPhysics · Electronic Devices · MCQ
- Q63.Three particles of masses 50 g, 100 g and 150 g are placed at the vertices of an equilateral triangle of side 1 m (as shown in the figure). The (x, y) coordinates of the centre of mass will be : Includes diagramPhysics · Center of Mass · MCQ
- Q64.The ratio of the weights of a body on the Earth’s surface to that on the surface of a planets is 9 : 4. The mass of the planet is th of that of the Earth. If 'R' is the radius of the Earth, what is the radius of the planet ?…Physics · Gravitation · MCQ
- Q65.A spring whose unstretched length is l has a force constant k. The spring is cut into two pieces of unstretched lengths l1 and l2 where, l1 = nl2 and n is an integer. The ratio k1/k2 of the corresponding force constant, k1 and k2 will be :Physics · Laws of Motion · MCQ
- Q66.Find the magnetic field at point P due to a straight line segment AB of length 6 cm carrying a current of 5A. (See figure) ( 0 = 4 × 10–7 N-A–2) Includes diagramPhysics · Magnetics · MCQ