Physics · 2021 · 18 Mar · Shift 2
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 · 18 Mar · Shift 2
25 questions from this JEE Main paper
Electromagnetic Waves1 questionsGravitation2 questionsCenter of Mass2 questionsAlternating Current1 questionsCircular Motion1 questionsGeometrical Optics1 questionsRotational Motion2 questionsMotion in A Straight Line1 questionsHeat and Thermodynamics3 questionsElectromagnetic Induction1 questionsSimple Harmonic Motion1 questionsMagnetics1 questionsMagnetic Properties of Matter1 questionsCurrent Electricity2 questionsWave Optics1 questionsWork Power and Energy1 questionsProperties of Matter1 questionsUnits and Measurements1 questionsElectrostatics1 questions
- Q44.A plane electromagnetic wave propagating along y-direction can have the following pair of electric field and magnetic field components.Physics · Electromagnetic Waves · MCQ
- Q45.If the angular velocity of earth's spin is increased such that the bodies at the equator start floating, the duration of the day would be approximately : [Take g = 10 ms 2, the radius of earth, R = 6400 103 m, Take =…Physics · Gravitation · MCQ
- Q46.An object of mass m1 collides with another object of mass m2, which is at rest. After the collision the objects move with equal speeds in opposite direction. The ratio of the masses m2 : m1 is :Physics · Center of Mass · MCQ
- Q47.In a series LCR circuit, the inductive reactance (XL) is 10 and the capacitive reactance (XC) is 4 . The resistance (R) in the circuit is 6 . The power factor of the circuit is :Physics · Alternating Current · MCQ
- Q48.A particle of mass m moves in a circular orbit under the central potential field, , where C is a positive constant. The correct radius velocity graph of the particle's motion is :Physics · Circular Motion · MCQ
- Q49.The angular momentum of a planet of mass M moving around the sun in an elliptical orbit is . The magnitude of the areal velocity of the planet is :Physics · Gravitation · MCQ
- Q50.Three rays of light, namely red (R), green (G) and blue (B) are incident on the face PQ of a right angled prism PQR as shown in the figure. The refractive indices of the material of the prism for red, green and blue wavelength are 1.27,… Includes diagramPhysics · Geometrical Optics · MCQ
- Q51.Consider a uniform wire of mass M and length L. It is bent into a semicircle. Its moment of inertia about a line perpendicular to the plane of the wire passing through the center is :Physics · Rotational Motion · MCQ
- Q52.The velocity displacement graph of a particle is shown in the figure. The acceleration displacement graph of the same particle is represented by : Includes diagramPhysics · Motion in A Straight Line · MCQ
- Q53.Consider a sample of oxygen behaving like an ideal gas. At 300 K, the ratio of root mean square (rms) velocity to the average velocity of gas molecule would be : (Molecular weight of oxygen is 32g/mol; R = 8.3 J K 1 mol 1)Physics · Heat and Thermodynamics · MCQ
- Q54.The time taken for the magnetic energy to reach 25% of its maximum value, when a solenoid of resistance R, inductance L is connected to a battery, is :Physics · Electromagnetic Induction · MCQ
- Q55.A solid cylinder of mass m is wrapped with an inextensible light string and, is placed on a rough inclined plane as shown in the figure. The frictional force acting between the cylinder and the inclined plane is : [The coefficient of… Includes diagramPhysics · Rotational Motion · MCQ
- Q56.The function of time representing a simple harmonic motion with a period of is :Physics · Simple Harmonic Motion · MCQ
- Q57.For an adiabatic expansion of an ideal gas, the fractional change in its pressure is equal to (where is the ratio of specific heats) :Physics · Heat and Thermodynamics · MCQ
- Q58.A proton and an -particle, having kinetic energies Kp and K respectively, enter into a magnetic field at right angles. The ratio of the radii of trajectory of proton to that of -particle is 2 : 1. The ratio of Kp :…Physics · Magnetics · MCQ
- Q59.An ideal gas in a cylinder is separated by a piston in such a way that the entropy of one part is S1 and that of the other part is S2. Given that S1 > S2. If the piston is removed then the total entropy of the system will be :Physics · Heat and Thermodynamics · MCQ
- Q60.Which of the following statements are correct? (A) Electric monopoles do not exist whereas magnetic monopoles exist. (B) Magnetic field lines due to a solenoid at its ends and outside cannot be completely straight and confined. (C)…Physics · Magnetic Properties of Matter · MCQ
- Q61.Two wires of same length and thickness having specific resistances 6 cm and 3 cm respectively are connected in parallel. The effective resistivity is cm. The value of , to the nearest integer, is …Physics · Current Electricity · Numerical
- Q62.Consider a 72 cm long wire AB as shown in the figure. The galvanometer jockey is placed at P on AB at a distance x cm from A. The galvanometer shows zero deflection. The value of x, to the nearest integer, is . Includes diagramPhysics · Current Electricity · Numerical
- Q63.A galaxy is moving away from the earth at a speed of 286 kms 1. The shift in the wavelength of a redline at 630 nm is x 10 10 m. The value of x, to the nearest integer, is . [Take the value of…Physics · Wave Optics · Numerical
- Q64.A ball of mass 4 kg, moving with a velocity of 10 ms 1, collides with a spring of length 8 m and force constant 100 Nm 1. The length of the compressed spring is x m. The value of x, to the nearest integer, is …Physics · Work Power and Energy · Numerical
- Q65.Consider a water tank as shown in the figure. It's cross-sectional area is 0.4 m2. The tank has an opening B near the bottom whose cross-section area is 1 cm2. A load of 24 kg is applied on the water at the top when the height of the water… Includes diagramPhysics · Properties of Matter · Numerical
- Q66.The radius of a sphere is measured to be (7.50 0.85) cm. Suppose the percentage error in its volume is x. The value of x, to the nearest x, is .Physics · Units and Measurements · Numerical
- Q67.The projectile motion of a particle of mass 5 g is shown in the figure. The initial velocity of the particle is ms-1 and the air resistance is assumed to be negligible. The magnitude of the change in momentum between the points… Includes diagramPhysics · Center of Mass · Numerical
- Q68.An infinite number of point charges, each carrying 1 C charge, are placed along the y-axis at y = 1 m, 2 m, 4 m, 8 m ............... The total force on a 1C point charge, placed at the origin, is x 103 N. The value of x, to…Physics · Electrostatics · Numerical