Physics · 2021 · 25 Jul · Shift 1
26 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 · 25 Jul · Shift 1
26 questions from this JEE Main paper
Heat and Thermodynamics3 questionsRotational Motion2 questionsDual Nature of Radiation2 questionsElectronic Devices1 questionsVector Algebra1 questionsCapacitor1 questionsGeometrical Optics1 questionsProperties of Matter1 questionsCenter of Mass2 questionsWave Optics1 questionsElectromagnetic Waves1 questionsMotion in A Straight Line1 questionsGravitation1 questionsUnits and Measurements1 questionsAlternating Current1 questionsElectromagnetic Induction1 questionsSimple Harmonic Motion2 questionsMagnetic Properties of Matter1 questionsElectrostatics1 questionsCurrent Electricity1 questions
- Q46.For a gas CP CV = R in a state P and CP CV = 1.10 R in a state Q, TP and TQ are the temperatures in two different states P and Q respectively. ThenPhysics · Heat and Thermodynamics · MCQ
- Q47.Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Moment of inertia of a circular disc of mass 'M' and radius 'R' about X, Y axes (passing through its plane) and Z-axis…Physics · Rotational Motion · MCQ
- Q48.What should be the order of arrangement of de-Broglie wavelength of electron ( e), an -particle ( a) and proton ( p) given that all have the same kinetic energy?Physics · Dual Nature of Radiation · MCQ
- Q49.Identify the logic operation carried out. Includes diagramPhysics · Electronic Devices · MCQ
- Q50.A particle of mass 4M at rest disintegrates into two particles of mass M and 3M respectively having non zero velocities. The ratio of de-Broglie wavelength of particle of mass M to that of mass 3M will be :Physics · Dual Nature of Radiation · MCQ
- Q51.Match List - I with List - II Choose the correct answer from the options given below : Includes diagramPhysics · Vector Algebra · MCQ
- Q52.A parallel plate capacitor with plate area 'A' and distance of separation 'd' is filled with a dielectric. What is the capacity of the capacitor when permittivity of the dielectric varies as : , for…Physics · Capacitor · MCQ
- Q53.A monoatomic ideal gas, initially at temperature T1 is enclosed in a cylinder fitted with a frictionless piston. The gas is allowed to expand adiabatically to a temperature T2 by releasing the piston suddenly. If l1 and l2 are the lengths…Physics · Heat and Thermodynamics · MCQ
- Q54.A ray of laser of a wavelength 630 nm is incident at an angle of 30 at the diamond-air interface. It is going from diamond to air. The refractive index of diamond is 2.42 and that of air is 1. Choose the correct option.Physics · Geometrical Optics · MCQ
- Q55.Two wires of same length and radius are joined end to end and loaded. The Young's modulii of the materials of the two wires are Y1 and Y2. The combination behaves as a single wire then its Young's modulus is :Physics · Properties of Matter · MCQ
- Q56.Two billiard balls of equal mass 30g strike a rigid wall with same speed of 108 kmph (as shown) but at different angles. If the balls get reflected with the same speed then the ratio of the magnitude of impulses imparted to ball 'a' and… Includes diagramPhysics · Center of Mass · MCQ
- Q57.In the Young's double slit experiment, the distance between the slits varies in time as d(t) = d0 + a0 sin t; where d0, and a0 are constants. The difference between the largest fringe width and the smallest fringe width…Physics · Wave Optics · MCQ
- Q58.Two different metal bodies A and B of equal mass are heated at a uniform rate under similar conditions. The variation of temperature of the bodies is graphically represented as shown in the figure. The ratio of specific heat capacities is : Includes diagramPhysics · Heat and Thermodynamics · MCQ
- Q59.A linearly polarized electromagnetic wave in vacuum is is incident normally on a perfectly reflecting wall at z = a. Choose the correct optionPhysics · Electromagnetic Waves · MCQ
- Q60.Water droplets are coming from an open tap at a particular rate. The spacing between a droplet observed at 4th second after its fall to the next droplet is 34.3 m. At what rate the droplets are coming from the tap ? (Take g = 9.8 m/s2)Physics · Motion in A Straight Line · MCQ
- Q61.The minimum and maximum distances of a planet revolving around the sun are x1 and x2. If the minimum speed of the planet on its trajectory is v0 then its maximum speed will be :Physics · Gravitation · MCQ
- Q62.A body of mass 2 kg moving with a speed of 4 m/s. makes an elastic collision with another body at rest and continues to move in the original direction but with one fourth of its initial peed. The speed of the two body centre of mass is …Physics · Center of Mass · Numerical
- Q63.Student A and student B used two screw gauges of equal pitch and 100 equal circular divisions to measure the radius of a given wire. The actual value of the radius of the wire is 0.322 cm. The absolute value of the difference between the… Includes diagramPhysics · Units and Measurements · Numerical
- Q64.An inductor of 10 mH is connected to a 20V battery through a resistor of 10 k and a switch. After a long time, when maximum current is set up in the circuit, the current is switched off. The current in the circuit after 1 s…Physics · Alternating Current · Numerical
- Q65.A circular conducting coil of radius 1 m is being heated by the change of magnetic field passing perpendicular to the plane in which the coil is laid. The resistance of the coil is 2 . The magnetic field is…Physics · Electromagnetic Induction · Numerical
- Q66.In the reported figure, two bodies A and B of masses 200 g and 800 g are attached with the system of springs. Springs are kept in a stretched position with some extension when the system is released. The horizontal surface is assumed to be… Includes diagramPhysics · Simple Harmonic Motion · Numerical
- Q67.The value of aluminium susceptibility is 2.2 10 5. The percentage increase in the magnetic field if space within a current carrying toroid is filled with aluminium is . Then the value of x is …Physics · Magnetic Properties of Matter · Numerical
- Q68.A particle of mass 1 mg and charge q is lying at the mid-point of two stationary particles kept at a distance '2 m' when each is carrying same charge 'q'. If the free charged particle is displaced from its equilibrium position through…Physics · Electrostatics · Numerical
- Q69.An electric bulb rated as 200 W at 100 V is used in a circuit having 200 V supply. The resistance 'R' that must be put in series with the bulb so that the bulb delivers the same power is .Physics · Current Electricity · Numerical
- Q70.A pendulum bob has a speed of 3 m/s at its lowest position. The pendulum is 50 cm long. The speed of bob, when the length makes an angle of 60 to the vertical will be (g = 10 m/s2) m/s.Physics · Simple Harmonic Motion · Numerical
- Q71.A particle of mass 'm' is moving in time 't' on a trajectory given by Where and are dimensional constants. The angular momentum of the particle…Physics · Rotational Motion · Numerical