Physics · 2018 · Shift 0
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 · 2018 · Shift 0
27 questions from this JEE Main paper
Waves1 questionsWave Optics2 questionsElectromagnetic Waves1 questionsAlternating Current1 questionsMagnetics2 questionsCurrent Electricity2 questionsElectrostatics1 questionsCapacitor1 questionsSimple Harmonic Motion1 questionsCenter of Mass2 questionsHeat and Thermodynamics1 questionsGravitation1 questionsRotational Motion2 questionsWork Power and Energy1 questionsProperties of Matter1 questionsLaws of Motion1 questionsMotion in A Straight Line1 questionsUnits and Measurements1 questionsElectronic Devices1 questionsAtoms and Nuclei3 questions
- Q45.A granite rod of 60 cm length is clamped at its middle point and is set into longitudinal vibrations. The density of granite is 2.7 103 kg/m3 and its Young’s modulus is 9.27 1010 Pa. What will be the fundamental frequency…Physics · Waves · MCQ
- Q46.The angular width of the central maximum in a single slit diffraction pattern is 60°. The width of the slit is 1 m. The slit is illuminated by monochromatic plane waves. If another slit of same width is made near it, Young’s fringes…Physics · Wave Optics · MCQ
- Q47.An EM wave from air enters a medium. The electric fields are = in air and =…Physics · Electromagnetic Waves · MCQ
- Q48.In an a.c. circuit, the instantaneous e.m.f. and current are given by e = 100 sin 30 t i = 20 sin In one cycle of a.c., the average power consumed by the circuit and the wattless current are,…Physics · Alternating Current · MCQ
- Q49.The dipole moment of a circular loop carrying a current I, is m and the magnetic field at the centre of the loop is B1. When the dipole moment is doubled by keeping the current constant, the magnetic field at the centre of the loop is …Physics · Magnetics · MCQ
- Q50.An electron, a proton and an alpha particle having the same kinetic energy are moving in circular orbits of radii re, rp, r respectively in a uniform magnetic field B. The relation between re, rp, r is:Physics · Magnetics · MCQ
- Q51.On interchanging the resistances, the balance point of a meter bridge shifts to the left by 10 cm. The resistance of their series combination is 1 k . How much was the resistance on the left slot before interchanging the…Physics · Current Electricity · MCQ
- Q52.Two batteries with e.m.f 12 V and 13 V are connected in parallel across a load resistor of 10 . The internal resistances of the two batteries are 1 and 2 respectively. The voltage across the load lies between :Physics · Current Electricity · MCQ
- Q53.Three concentric metal shells A, B and C of respective radii a, b and c (a < b < c) have surface charge densities , and respectively. The potential of shell B is :Physics · Electrostatics · MCQ
- Q54.A parallel plate capacitor of capacitance 90 pF is connected to a battery of emf 20 V. If a dielectric material of dielectric constant K = 5/3 is inserted between the plates, the magnitude of the induced charge will be :Physics · Capacitor · MCQ
- Q55.A silver atom in a solid oscillates in simple harmonic motion in some direction with a frequency of 1012/sec. What is the force constant of the bonds connecting one atom with the other? (Mole wt. of silver = 108 and Avogadro number = 6.02…Physics · Simple Harmonic Motion · MCQ
- Q56.Unpolarized light of intensity I passes through an ideal polarizer A. Another identical polarizer B is placed behind A. The intensity of light beyond B is found to be I/2. Now another identical polarizer C is placed between A and B. The…Physics · Wave Optics · MCQ
- Q57.The mass of a hydrogen molecule is 3.32 10-27 kg. If 1023 hydrogen molecules strike, per second, a fixed wall of area 2 cm2 at an angle of 45o to the normal, and rebound elastically with a speed of 103 m/s, then the pressure on…Physics · Center of Mass · MCQ
- Q58.Two moles of an ideal monatomic gas occupies a volume V at 27oC. The gas expands adiabatically to a volume 2 V. Calculate (a) the final temperature of the gas and (b) change in its internal energy.Physics · Heat and Thermodynamics · MCQ
- Q59.A particle is moving with a uniform speed in a circular orbit of radius R in a central force inversely proportional to the nth power of R. If the period of rotation of the particle is T, then :Physics · Gravitation · MCQ
- Q60.From a uniform circular disc of radius R and mass 9M, a small disc of radius R/3 is removed as shown in the figure. The moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through centre… Includes diagramPhysics · Rotational Motion · MCQ
- Q61.A particle is moving in a circular path of radius under the action of an attractive potential Its total energy is:Physics · Work Power and Energy · MCQ
- Q62.A solid sphere of radius r made of a soft material of bulk modulus K is surrounded by a liquid in a cylindrical container. A massless piston of area a floats on the surface of the liquid, covering entire cross section of cylindrical…Physics · Properties of Matter · MCQ
- Q63.Seven identical circular planar disks, each of mass M and radius R are welded symmetrically as shown. The moment of inertia of the arrangement about the axis normal to the plane and passing through the point P is : Includes diagramPhysics · Rotational Motion · MCQ
- Q64.In a collinear collision, a particle with an initial speed v0 strikes a stationary particle of the same mass. If the final total kinetic energy is 50% greater than the original kinetic energy, the magnitude of the relative velocity between…Physics · Center of Mass · MCQ
- Q65.Two masses m1 = 5 kg and m2 = 10 kg, connected by an inextensible string over a frictionless pulley, are moving as shown in the figure. The coefficient of friction of horizontal surface is 0.15. The minimum weight m that should be put on… Includes diagramPhysics · Laws of Motion · MCQ
- Q66.All the graphs below are intended to represent the same motion. One of them does it incorrectly. Pick it up.Physics · Motion in A Straight Line · MCQ
- Q67.The density of a material in the shape of a cube is determined by measuring three sides of the cube and its mass. If the relative errors in measuring the mass and length are respectively 1.5% and 1%, the maximum error in determining the…Physics · Units and Measurements · MCQ
- Q68.The reading of the ammeter for a silicon diode in the given circuit is : Includes diagramPhysics · Electronic Devices · MCQ
- Q69.If the series limit frequency of the Lyman series is , then the series limit frequency of the Pfund series is:Physics · Atoms and Nuclei · MCQ
- Q70.It is found that if a neutron suffers an elastic collinear collision with deuterium at rest, fractional loss of its energy is pd; while for its similar collision with carbon nucleus at rest, fractional loss of energy is pc. The values of…Physics · Atoms and Nuclei · MCQ
- Q71.An electron from various excited states of hydrogen atom emit radiation to come to the ground state. Let , be the de Broglie wavelength of the electron in the nth state and the ground state respectively. Let …Physics · Atoms and Nuclei · MCQ