Physics · 2020 · 5 Sep · Shift 1
23 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 · 5 Sep · Shift 1
23 questions from this JEE Main paper
Atoms and Nuclei1 questionsGeometrical Optics2 questionsRotational Motion2 questionsElectronic Devices1 questionsUnits and Measurements1 questionsCapacitor1 questionsMotion in A Straight Line1 questionsWaves2 questionsProperties of Matter1 questionsElectromagnetic Waves1 questionsHeat and Thermodynamics3 questionsElectromagnetic Induction1 questionsMagnetics1 questionsMotion in A Plane1 questionsCurrent Electricity2 questionsGravitation1 questionsElectrostatics1 questions
- Q41.A particle of mass 200 MeV/c2 collides with a hydrogen atom at rest. Soon after the collision the particle comes to rest, and the atom recoils and goes to its first excited state. The initial kinetic energy of the particle (in eV) is …Physics · Atoms and Nuclei · Numerical
- Q42.A compound microscope consists of an objective lens of focal length 1 cm and an eyepiece of focal length 5 cm with a separation of 10 cm. The distance between an object and the objective lens, at which the strain on the eye is minimum is …Physics · Geometrical Optics · Numerical
- Q43.A force N acts at a point m. Then the magnitude of torque about the point …Physics · Rotational Motion · Numerical
- Q44.With increasing biasing voltage of a photodiode, the photocurrent magnitude :Physics · Electronic Devices · MCQ
- Q45.A physical quantity z depends on four observables a, b, c and d, as z = . The percentages of error in the measurement of a, b, c and d are 2%, 1.5%, 4% and 2.5% respectively. The percentage…Physics · Units and Measurements · MCQ
- Q46.Two capacitors of capacitances C and 2C are charged to potential differences V and 2V, respectively. These are then connected in parallel in such a manner that the positive terminal of one is connected to the negative terminal of the…Physics · Capacitor · MCQ
- Q47.A helicopter rises from rest on the ground vertically upwards with a constant acceleration g. A food packet is dropped from the helicopter when it is at a height h. The time taken by the packet to reach the ground is close to : [g is the…Physics · Motion in A Straight Line · MCQ
- Q48.Assume that the displacement(s) of air is proportional to the pressure difference ( p) created by a sound wave. Displacement (s) further depends on the speed of sound (v), density of air () and the frequency (f). If …Physics · Waves · MCQ
- Q49.A hollow spherical shell at outer radius R floats just submerged under the water surface. The inner radius of the shell is r. If the specific gravity of the shell material is w.r.t water, the value of r is :Physics · Properties of Matter · MCQ
- Q50.An electron is constrained to move along the y-axis with a speed of 0.1 c (c is the speed of light) in the presence of electromagnetic wave, whose electric field is …Physics · Electromagnetic Waves · MCQ
- Q51.A wheel is rotating freely with an angular speed on a shaft. The moment of inertia of the wheel is I and the moment of inertia of the shaft is negligible. Another wheel of moment of inertia 3I initially at rest is suddenly coupled…Physics · Rotational Motion · MCQ
- Q52.A bullet of mass 5 g, travelling with a speed of 210 m/s, strikes a fixed wooden target. One half of its kinetic energy is converted into heat in the bullet while the other half is converted into heat in the wood. The rise of temperature…Physics · Heat and Thermodynamics · MCQ
- Q53.For a concave lens of focal length f, the relation between object and image distances u and v, respectively, from its pole can best be represented by (u = v is the reference line) :Physics · Geometrical Optics · MCQ
- Q54.Two concentric circular coils, C1 and C2 are placed in the XY plane. C1 has 500 turns, and a radius of 1 cm. C2 has 200 turns and radius of 20 cm. C2 carries a time dependent current I(t) = (5t2 – 2t + 3) A where t is in s. The emf induced…Physics · Electromagnetic Induction · Numerical
- Q55.A square loop of side 2 , and carrying current I, is kept in XZ plane with its centre at origin. A long wire carrying the same current I is placed parallel to the z-axis and passing through the point (0, b, 0), (b >> a). The…Physics · Magnetics · MCQ
- Q56.Number of molecules in a volume of 4 cm3 of a perfect monoatomic gas at some temperature T and at a pressure of 2 cm of mercury is close to? (Given, mean kinetic energy of a molecule (at T) is 4 10–14 erg, g = 980 cm/s2, density…Physics · Heat and Thermodynamics · MCQ
- Q57.A balloon is moving up in air vertically above a point A on the ground. When it is at a height h1, a girl standing at a distanced (point B) from A (see figure) sees it at an angle 45o with respect to the vertical. When the balloon climbs… Includes diagramPhysics · Motion in A Plane · MCQ
- Q58.A galvanometer of resistance G is converted into a voltmeter of range 0 – 1 V by connecting a resistance R1 in series with it. The additional resistance that should be connected in series with R1 to increase the range of the voltmeter to 0…Physics · Current Electricity · MCQ
- Q59.In a resonance tube experiment when the tube is filled with water up to a height of 17.0 cm from bottom, it resonates with a given tuning fork. When the water level is raised the next resonance with the same tuning fork occurs at a height…Physics · Waves · MCQ
- Q60.The value of the acceleration due to gravity is g1 at a height h = (R = radius of the earth) from the surface of the earth. It is again equal to g1 at a depth d below the surface of the earth. The ratio …Physics · Gravitation · MCQ
- Q61.An electrical power line, having a total resistance of 2 , delivers 1 kW at 220 V. The efficiency of the transmission line is approximately :Physics · Current Electricity · MCQ
- Q62.A solid sphere of radius R carries a charge Q + q distributed uniformly over its volume. A very small point like piece of it of mass m gets detached from the bottom of the sphere and falls down vertically under gravity. This piece carries… Includes diagramPhysics · Electrostatics · MCQ
- Q63.Three different processes that can occur in an ideal monoatomic gas are shown in the P vs V diagram. The paths are labelled as A B, A C and A D. The change in internal energies during these process are taken as EAB, EAC… Includes diagramPhysics · Heat and Thermodynamics · MCQ