Physics · 2021 · 27 Jul · Shift 1
25 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 · 27 Jul · Shift 1
25 questions from this JEE Main paper
Current Electricity1 questionsHeat and Thermodynamics2 questionsElectromagnetic Waves1 questionsRotational Motion2 questionsCenter of Mass1 questionsCapacitor3 questionsWave Optics1 questionsVector Algebra1 questionsProperties of Matter2 questionsSimple Harmonic Motion1 questionsMotion in A Straight Line1 questionsAlternating Current2 questionsElectrostatics1 questionsUnits and Measurements1 questionsGravitation1 questionsAtoms and Nuclei1 questionsDual Nature of Radiation1 questionsGeometrical Optics1 questionsMagnetic Properties of Matter1 questions
- Q48.In the given figure, a battery of emf E is connected across a conductor PQ of length 'l' and different area of cross-sections having radii r1 and r2 (r2 < r1). Choose the correct option as one moves from P to Q : Includes diagramPhysics · Current Electricity · MCQ
- Q49.The number of molecules in one litre of an ideal gas at 300 K and 2 atmospheric pressure with mean kinetic energy 2 10 9 J per molecules is :Physics · Heat and Thermodynamics · MCQ
- Q50.The relative permittivity of distilled water is 81. The velocity of light in it will be : (Given r = 1)Physics · Electromagnetic Waves · MCQ
- Q51.Choose the correct answer from the options given below: Includes tablePhysics · Rotational Motion · MCQ
- Q52.Three objects A, B and C are kept in a straight line on a frictionless horizontal surface. The masses of A, B and C are m, 2m and 2m respectively. A moves towards B with a speed of 9 m/s and makes an elastic collision with it. Thereafter B… Includes diagramPhysics · Center of Mass · MCQ
- Q53.A capacitor of capacitance C = 1 F is suddenly connected to a battery of 100 volt through a resistance R = 100 . The time taken for the capacitor to be charged to get 50 V is : [Take ln 2 = 0.69] Includes diagramPhysics · Capacitor · MCQ
- Q54.In the reported figure, a capacitor is formed by placing a compound dielectric between the plates of parallel plate capacitor. The expression for the capacity of the said capacitor will be : (Given area of plate = A) Includes diagramPhysics · Capacitor · MCQ
- Q55.The figure shows two solid discs with radius R and r respectively. If mass per unit area is same for both, what is the ratio of MI of bigger disc around axis AB (Which is to the plane of the disc and passing through its centre) of… Includes diagramPhysics · Rotational Motion · MCQ
- Q56.In Young's double slit experiment, if the source of light changes from orange to blue then :Physics · Wave Optics · MCQ
- Q57.In the reported figure, there is a cyclic process ABCDA on a sample of 1 mol of a diatomic gas. The temperature of the gas during the process A B and C D are T1 and T2 (T1 > T2) respectively. Choose the correct option out of… Includes diagramPhysics · Heat and Thermodynamics · MCQ
- Q58.Assertion A : If A, B, C, D are four points on a semi-circular are with centre at 'O' such that , then … Includes diagramPhysics · Vector Algebra · MCQ
- Q59.A light cylindrical vessel is kept on a horizontal surface. Area of base is A. A hole of cross-sectional area 'a' is made just at its bottom side. The minimum coefficient of friction necessary to prevent sliding the vessel due to the… Includes diagramPhysics · Properties of Matter · MCQ
- Q60.A particle starts executing simple harmonic motion (SHM) of amplitude 'a' and total energy E. At any instant, its kinetic energy is then its displacement 'y' is given by :Physics · Simple Harmonic Motion · MCQ
- Q61.Two capacitors of capacities 2C and C are joined in parallel and charged up to potential V. The battery is removed and the capacitor of capacity C is filled completely with a medium of dielectric constant K. The potential difference across…Physics · Capacitor · MCQ
- Q62.A ball is thrown up with a certain velocity so that it reaches a height 'h'. Find the ratio of the two different times of the ball reaching in both the directions.Physics · Motion in A Straight Line · MCQ
- Q63.A 0.07 H inductor and a 12 resistor are connected in series to a 220V, 50 Hz ac source. The approximate current in the circuit and the phase angle between current and source voltage are respectively. [Take as ${{22} \over…Physics · Alternating Current · MCQ
- Q64.Two identical tennis balls each having mass 'm' and charge 'q' are suspended from a fixed point by threads of length 'l'. What is the equilibrium separation when each thread makes a small angle '' with the vertical?Physics · Electrostatics · MCQ
- Q65.Assertion A : If in five complete rotations of the circular scale, the distance travelled on main scale of the screw gauge is 5 mm and there are 50 total divisions on circular scale, then least count is 0.001 cm. Reason R : Least Count = …Physics · Units and Measurements · MCQ
- Q66.Consider an electrical circuit containing a two way switch 'S'. Initially S is open and then T1 is connected to T2. As the current in R = 6 attains a maximum value of steady state level, T1 is disconnected from T2 and immediately… Includes diagramPhysics · Alternating Current · Numerical
- Q67.Suppose two planets (spherical in shape) in radii R and 2R, but mass M and 9M respectively have a centre to centre separation 8 R as shown in the figure. A satellite of mass 'm' is projected from the surface of the planet of mass 'M'… Includes diagramPhysics · Gravitation · Numerical
- Q68.In Bohr's atomic model, the electron is assumed to revolve in a circular orbit of radius 0.5 . If the speed of electron is 2.2 166 m/s, then the current associated with the electron will be …Physics · Atoms and Nuclei · Numerical
- Q69.A particle of mass 9.1 10 31 kg travels in a medium with a speed of 106 m/s and a photon of a radiation of linear momentum 10 27 kg m/s travels in vacuum. The wavelength of photon is times the…Physics · Dual Nature of Radiation · Numerical
- Q70.A prism of refractive index n1 and another prism of refractive index n2 are stuck together (as shown in the figure). n1 and n2 depend on , the wavelength of light, according to the relation … Includes diagramPhysics · Geometrical Optics · Numerical
- Q71.A stone of mass 20 g is projected from a rubber catapult of length 0.1 m and area of cross section 10 6 m2 stretched by an amount 0.04 m. The velocity of the projected stone is m/s. (Young's modulus of rubber…Physics · Properties of Matter · Numerical
- Q72.In a uniform magnetic field, the magnetic needle has a magnetic moment 9.85 10 2 A/m2 and moment of inertia 5 10 6 kg m2. If it performs 10 complete oscillations in 5 seconds then the magnitude of the magnetic…Physics · Magnetic Properties of Matter · Numerical