Physics · 2019 · 10 Apr · Shift 1
24 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 · 10 Apr · Shift 1
24 questions from this JEE Main paper
Magnetics2 questionsGravitation1 questionsCurrent Electricity5 questionsDual Nature of Radiation1 questionsAlternating Current1 questionsGeometrical Optics2 questionsElectrostatics1 questionsRotational Motion3 questionsElectromagnetic Waves1 questionsHeat and Thermodynamics3 questionsLaws of Motion1 questionsCapacitor1 questionsCenter of Mass1 questionsProperties of Matter1 questions
- Q44.A proton, an electron, and a Helium nucleus, have the same energy. They are in circular orbits in a plane due to magnetic field perpendicualr to the plane. Let rp, re and rHe be their respective radii, thenPhysics · Magnetics · MCQ
- Q45.The value of acceleration due to gravity at Earth's surface is 9.8 ms–2. The altitude above its surface at which the acceleration due to gravity decreases to 4.9 ms–2, is close to : (Radius of earth = 6.4 × 106 m)Physics · Gravitation · MCQ
- Q46.A moving coil galvanometer allows a full scale current of 10–4 A. A series resistance of 2 M is required to convert the above galvanometer into a voltmeter of range 0-5 V. Therefore the value of shunt resistance required to…Physics · Current Electricity · MCQ
- Q47.In a photoelectric effect experiment the threshold wavelength of the light is 380 nm. If the wavelentgh of incident light is 260 nm, the maximum kinetic energy of emitted electrons will be: Given E (in eV) = 1237/ (in nm)Physics · Dual Nature of Radiation · MCQ
- Q48.A transformer consisting of 300 turns in the primary and 150 turns in the secondary gives output power of 2.2 kW. If the current in the secondary coil is 10A, then the input voltage and current in the primary coil are :Physics · Alternating Current · MCQ
- Q49.In an experiment, the resistance of a material is plotted as a function of temperature (in some range). As shown in the figure, it is a straight line. One may conclude that : Includes diagramPhysics · Current Electricity · MCQ
- Q50.A ray of light AO in vacuum is incident on a glass slab at angle 60° and refracted at angle 30° along OB as shown in the figure. The optical path length of light ray from A to B is: Includes diagramPhysics · Geometrical Optics · MCQ
- Q51.A uniformly charged ring of radius 3a and total charge q is placed in xy-plane centred at origin. A point charge q is moving towards the ring along the z-axis and has speed u at z = 4a. The minimum value of u such that it crosses the…Physics · Electrostatics · MCQ
- Q52.Two wires A & B are carrying currents I1 & I2 as shown in the figure. The separation between them is d. A third wire C carrying a current I is to be kept parallel to them at a distance x from A such that the net force acting on it… Includes diagramPhysics · Magnetics · MCQ
- Q53.A particle of mass m is moving along a trajectory given by x = x0 + a cos 1t y = y0 + b sin 2t The torque, acting on the particle about the origin, at t = 0 is :Physics · Rotational Motion · MCQ
- Q54.The electric field of a plane electromagnetic wave is given by The corresponding magnetic field is then given byPhysics · Electromagnetic Waves · MCQ
- Q55.Two coaxial discs, having moments of inertia I1 and I1/2, are rotating with respective angular velocities 1 and 1/2 , about their common axis. They are brought in contact with each other and thereafter they rotate with a…Physics · Rotational Motion · MCQ
- Q56.A thin disc of mass M and radius R has mass per unit area (r) = kr2 where r is the distance from its centre. Its moment of inertia about an axis going through its centre of mass and perpendicular to its plane is :Physics · Rotational Motion · MCQ
- Q57.A cylinder with fixed capacity of 67.2 lit contains helium gas at STP. The amount of heat needed to raise the temperature of the gas by 20°C is : [Given that R = 8.31 J mol–1 K–1]Physics · Heat and Thermodynamics · MCQ
- Q58.One plano-convex and one plano-concave lens of same radius of curvature 'R' but of different materials are joined side by side as shown in the figure. If the refractive index of the material of 1 is 1 and that of 2 is 2, then… Includes diagramPhysics · Geometrical Optics · MCQ
- Q59.A ball is thrown upward with an initial velocity V0 from the surface of the earth. The motion of the ball is affected by a drag force equal to m u2 (where m is mass of the ball, u is its instantaneous velocity and is a…Physics · Laws of Motion · MCQ
- Q60.In a meter bridge experiment, the circuit diagram and the corresponding observation table are shown in figure Which of the readings is inconsistent? Includes table Includes diagramPhysics · Current Electricity · MCQ
- Q61.A current of 5 A passes through a copper conductor (resistivity = 1.7 × 10–8 m) of radius of cross-section 5 mm. Find the mobility of the charges if their drift velocity is 1.1 × 10–3 m/s.Physics · Current Electricity · MCQ
- Q62.Figure shows charge (q) versus voltage (V) graph for series and parallel combination of two given capacitors. The capacitances are : Includes diagramPhysics · Capacitor · MCQ
- Q63.Two particles, of masses M and 2M, moving, as shown, with speeds of 10 m/s and 5 m/s, collide elastically at the origin. After the collision, they move along the indicated directions with speeds u1 and u2, respectively. The values of u1… Includes diagramPhysics · Center of Mass · MCQ
- Q64.The ratio of surface tensions of mercury and water is given to be 7.5 while the ratio of thier densities is 13.6. Their contact angles, with glass, are close to 135° and 0°, respectively. It is observed that mercury gets depressed by an…Physics · Properties of Matter · MCQ
- Q65.A 25 × 10–3 m3 volume cylinder is filled with 1 mol of O2 gas at room temperature (300K). The molecular diameter of O2, and its root mean square speed, are found to be 0.3 nm, and 200 m/s, respectively. What is the average collision rate…Physics · Heat and Thermodynamics · MCQ
- Q66.In the given circuit, an ideal voltmeter connected across the 10 resistance reads 2V. The internal resistance r, of each cell is: Includes diagramPhysics · Current Electricity · MCQ
- Q67.n moles of an ideal gas with constant volume heat capcity CV undergo an isobaric expansion by certain volume. The ratio of the work done in the process, to the heat supplied is :Physics · Heat and Thermodynamics · MCQ