Physics · 2021 · 20 Jul · Shift 2
27 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 · 2021 · 20 Jul · Shift 2
27 questions from this JEE Main paper
Center of Mass1 questionsMotion in A Straight Line1 questionsGravitation2 questionsWave Optics1 questionsProperties of Matter2 questionsElectromagnetic Waves1 questionsAlternating Current2 questionsHeat and Thermodynamics3 questionsSimple Harmonic Motion1 questionsDual Nature of Radiation2 questionsRotational Motion3 questionsUnits and Measurements1 questionsWork Power and Energy1 questionsVector Algebra1 questionsMagnetic Properties of Matter1 questionsElectronic Devices2 questionsLaws of Motion1 questionsCurrent Electricity1 questions
- Q46.If the Kinetic energy of a moving body becomes four times its initial Kinetic energy, then the percentage change in its momentum will be :Physics · Center of Mass · MCQ
- Q47.A boy reaches the airport and finds that the escalator is not working. He walks up the stationary escalator in time t1. If he remains stationary on a moving escalator then the escalator takes him up in time t2. The time taken by him to…Physics · Motion in A Straight Line · MCQ
- Q48.A satellite is launched into a circular orbit of radius R around earth, while a second satellite is launched into a circular orbit of radius 1.02 R. The percentage difference in the time periods of the two satellites is :Physics · Gravitation · MCQ
- Q49.With what speed should a galaxy move outward with respect to earth so that the sodium-D line at wavelength 5890 is observed at 5896 ?Physics · Wave Optics · MCQ
- Q50.The length of a metal wire is l1, when the tension in it is T1 and is l2 when the tension is T2. The natural length of the wire is :Physics · Properties of Matter · MCQ
- Q51.In an electromagnetic wave the electric field vector and magnetic field vector are given as and respectively. The direction of propagation of electromagnetic wave…Physics · Electromagnetic Waves · MCQ
- Q52.For a series LCR circuit with R = 100 , L = 0.5 mH and C = 0.1 pF connected across 220V 50 Hz AC supply, the phase angle between current and supplied voltage and the nature of the circuit is :Physics · Alternating Current · MCQ
- Q53.Which of the following graphs represent the behavior of an ideal gas? Symbols have their usual meaning.Physics · Heat and Thermodynamics · MCQ
- Q54.A particle is making simple harmonic motion along the X-axis. If at a distances x1 and x2 from the mean position the velocities of the particle are v1 and v2 respectively. The time period of its oscillation is given as :Physics · Simple Harmonic Motion · MCQ
- Q55.An electron having de-Broglie wavelength is incident on a target in a X-ray tube. Cut-off wavelength of emitted X-ray is :Physics · Dual Nature of Radiation · MCQ
- Q56.A body rolls down an inclined plane without slipping. The kinetic energy of rotation is 50% of its translational kinetic energy. The body is :Physics · Rotational Motion · MCQ
- Q57.If time (t), velocity (v), and angular momentum (l) are taken as the fundamental units. Then the dimension of mass (m) in terms of t, v and l is :Physics · Units and Measurements · MCQ
- Q58.The correct relation between the degrees of freedom f and the ratio of specific heat is :Physics · Heat and Thermodynamics · MCQ
- Q59.Consider a binary star system of star A and star B with masses mA and mB revolving in a circular orbit of radii rA an rB, respectively. If TA and TB are the time period of star A and star B, respectively, Then :Physics · Gravitation · MCQ
- Q60.A body at rest is moved along a horizontal straight line by a machine delivering a constant power. The distance moved by the body in time 't' is proportional to :Physics · Work Power and Energy · MCQ
- Q61.Two vectors and have equal magnitudes. If the magnitude of is n times the magnitude of , then angle between …Physics · Vector Algebra · MCQ
- Q62.Two small drops of mercury each of radius R coalesce to form a single large drop. The ratio of total surface energy before and after the change is :Physics · Properties of Matter · MCQ
- Q63.The magnetic susceptibility of a material of a rod is 499. Permeability in vacuum is 4 10 7 H/m. Absolute permeability of the material of the rod is :Physics · Magnetic Properties of Matter · MCQ
- Q64.A zener diode having zener voltage 8 V and power dissipation rating of 0.5 W is connected across a potential divider arranged with maximum potential drop across zener diode is as shown in the diagram. The value of protective resistance Rp… Includes diagramPhysics · Electronic Devices · Numerical
- Q65.A body of mass 'm' is launched up on a rough inclined plane making an angle of 30 with the horizontal. The coefficient of friction between the body and plane is if the time of ascent is half of the time of…Physics · Laws of Motion · Numerical
- Q66.In the given figure switches S1 and S2 are in open condition. The resistance across ab when the switches S1 and S2 are closed is . Includes diagramPhysics · Current Electricity · Numerical
- Q67.Two bodies, a ring and a solid cylinder of same material are rolling down without slipping an inclined plane. The radii of the bodies are same. The ratio of velocity of the centre of mass at the bottom of the inclined plane of the ring to…Physics · Rotational Motion · Numerical
- Q68.For the forward biased diode characteristics shown in the figure, the dynamic resistance at ID = 3 mA will be . Includes diagramPhysics · Electronic Devices · Numerical
- Q69.A series LCR circuit of R = 5 , L = 20 mH and C = 0.5 F is connected across an AC supply of 250 V, having variable frequency. The power dissipated at resonance condition is 102 W.Physics · Alternating Current · Numerical
- Q70.One mole of an ideal gas at 27 is taken from A to B as shown in the given PV indicator diagram. The work done by the system will be 10 1 J. [Given : R = 8.3 J/mole K, ln2 = 0.6931] (Round off… Includes diagramPhysics · Heat and Thermodynamics · Numerical
- Q71.A certain metallic surface is illuminated by monochromatic radiation of wavelength . The stopping potential for photoelectric current for this radiation is 3V0. If the same surface is illuminated with a radiation of wavelength 2 …Physics · Dual Nature of Radiation · Numerical
- Q72.A body rotating with an angular speed of 600 rpm is uniformly accelerated to 1800 rpm in 10 sec. The number of rotations made in the process is .Physics · Rotational Motion · Numerical