Physics · 2021 · 20 Jul · Shift 1
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 1
27 questions from this JEE Main paper
Magnetics1 questionsElectronic Devices1 questionsCurrent Electricity2 questionsCircular Motion1 questionsHeat and Thermodynamics4 questionsMotion in A Plane1 questionsElectrostatics2 questionsElectromagnetic Induction1 questionsLaws of Motion1 questionsAtoms and Nuclei1 questionsDual Nature of Radiation1 questionsVector Algebra1 questionsAlternating Current2 questionsGeometrical Optics2 questionsGravitation1 questionsProperties of Matter1 questionsWork Power and Energy1 questionsRotational Motion1 questionsWaves1 questionsCenter of Mass1 questions
- Q45.A deuteron and an alpha particle having equal kinetic energy enter perpendicularly into a magnetic field. Let rd and r be their respective radii of circular path. The value of is equal to :Physics · Magnetics · MCQ
- Q46.For the circuit shown below, calculate the value of Iz : Includes diagramPhysics · Electronic Devices · MCQ
- Q47.A current of 5 A is passing through a non-linear magnesium wire of cross-section 0.04 m2. At every point the direction of current density is at an angle of 60 with the unit vector of area of cross-section. The magnitude of…Physics · Current Electricity · MCQ
- Q48.The normal reaction 'N' for a vehicle of 800 kg mass, negotiating a turn on a 30 banked road at maximum possible speed without skidding is 103 kg m/s2. [Given cos30 = 0.87, s = 0.2]Physics · Circular Motion · MCQ
- Q49.Consider a mixture of gas molecule of types A, B and C having masses mA < mB < mC. The ratio of their root mean square speeds at normal temperature and pressure is :Physics · Heat and Thermodynamics · MCQ
- Q50.The amount of heat needed to raise the temperature of 4 moles of rigid diatomic gas from 0 C to 50 C when no work is done is . (R is the universal gas constant).Physics · Heat and Thermodynamics · MCQ
- Q51.A butterfly is flying with a velocity m/s in North-East direction. Wind is slowly blowing at 1 m/s from North to South. The resultant displacement of the butterfly in 3 seconds is :Physics · Motion in A Plane · MCQ
- Q52.A certain charge Q is divided into two parts q and (Q q). How should the charges Q and q be divided so that q and (Q q) placed at a certain distance apart experience maximum electrostatic repulsion?Physics · Electrostatics · MCQ
- Q53.The arm PQ of a rectangular conductor is moving from x = 0 to x = 2b outwards and then inwards from x = 2b to x = 0 as shown in the figure. A uniform magnetic field perpendicular to the plane is acting from x = 0 to x = b. Identify the… Includes diagramPhysics · Electromagnetic Induction · MCQ
- Q54.The value of current in the 6 resistance is : Includes diagramPhysics · Current Electricity · MCQ
- Q55.A steel block of 10 kg rests on a horizontal floor as shown. When three iron cylinders are placed on it as shown, the block and cylinders go down with an acceleration 0.2 m/s2. The normal reaction R' by the floor if mass of the iron… Includes diagramPhysics · Laws of Motion · MCQ
- Q56.A nucleus of mass M emits -ray photon of frequency 'v'. The loss of internal energy by the nucleus is : [Take 'c' as the speed of electromagnetic wave]Physics · Atoms and Nuclei · MCQ
- Q57.The radiation corresponding to 3 2 transition of a hydrogen atom falls on a gold surface to generate photoelectrons. The electrons are passed through a magnetic field of 5 10 4 T. Assume that the radius of the largest…Physics · Dual Nature of Radiation · MCQ
- Q58.If and are two vectors satisfying the relation . =. Then the value of …Physics · Vector Algebra · MCQ
- Q59.The entropy of any system is given by where and are the constants. , J, k and R are no. of moles, mechanical equivalent of heat,…Physics · Heat and Thermodynamics · MCQ
- Q60.AC voltage V(t) = 20 sin t of frequency 50 Hz is applied to a parallel plate capacitor. The separation between the plates is 2 mm and the area is 1 m2. The amplitude of the oscillating displacement current for the applied AC…Physics · Alternating Current · MCQ
- Q61.Region I and II are separated by a spherical surface of radius 25 cm. An object is kept in region I at a distance of 40 cm from the surface. The distance of the image from the surface is : Includes diagramPhysics · Geometrical Optics · MCQ
- Q62.A person whose mass is 100 kg travels from Earth to Mars in a spaceship. Neglect all other objects in sky and take acceleration due to gravity on the surface of the Earth and Mars as 10 m/s2 and 4 m/s2 respectively. Identify from the below… Includes diagramPhysics · Gravitation · MCQ
- Q63.The value of tension in a long thin metal wire has been changed from T1 to T2. The lengths of the metal wire at two different values of tension T1 and T2 are l1 and l2 respectively. The actual length of the metal wire is :Physics · Properties of Matter · MCQ
- Q64.A body having specific charge 8 C/g is resting on a frictionless plane at a distance 10 cm from the wall (as shown in the figure). It starts moving towards the wall when a uniform electric field of 100 V/m is applied horizontally… Includes diagramPhysics · Electrostatics · Numerical
- Q65.In a spring gun having spring constant 100 N/m a small ball 'B' of mass 100 g is put in its barrel (as shown in figure) by compressing the spring through 0.05 m. There should be a box placed at a distance 'd' on the ground so that the ball… Includes diagramPhysics · Work Power and Energy · Numerical
- Q66.An object viewed from a near point distance of 25 cm, using a microscopic lens with magnification '6', gives an unresolved image. A resolved image is observed at infinite distance with a total magnification double the earlier using an…Physics · Geometrical Optics · Numerical
- Q67.A circular disc reaches from top to bottom of an inclined plane of length 'L'. When it slips down the plane, it makes time 't1'. When it rolls down the plane, it takes time t2. The value of is $\sqrt {{3 \over…Physics · Rotational Motion · Numerical
- Q68.The amplitude of wave disturbance propagating in the positive x-direction is given by at time t = 0 and at t = 1 s, where x and y are in metres. The shape of wave does not…Physics · Waves · Numerical
- Q69.In an LCR series circuit, an inductor 30 mH and a resistor 1 are connected to an AC source of angular frequency 300 rad/s. The value of capacitance for which, the current leads the voltage by 45 is …Physics · Alternating Current · Numerical
- Q70.A rod of mass M and length L is lying on a horizontal frictionless surface. A particle of mass 'm' travelling along the surface hits at one end of the rod with a velocity 'u' in a direction perpendicular to the rod. The collision is…Physics · Center of Mass · Numerical
- Q71.In the reported figure, heat energy absorbed by a system in going through a cyclic process is J. Includes diagramPhysics · Heat and Thermodynamics · Numerical