Practice/Question bank/JEE Main

JEE Main practice questions

NTA-style Physics, Chemistry and Maths MCQs with solutions. 2,688 questions in the bank.

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  1. 1Mass per unit area of a circular disc of radius a depends on the distance r from its centre as [IMAGE] The moment of inertia of the disc…Physics· Rigid Body Dynamics· Moderate· figure
  2. 2A thin walled hollow cylinder is closed from both the ends. The mass of the curved part is m and the mass of each circular part is also m.…Physics· Rigid Body Dynamics· Moderate· figure
  3. 3A vessel of depth 2h is half filled with a liquid of refractive index[IMAGE] and the upper half with another liquid of refractive…Physics· Ray Optics· Moderate· figure
  4. 4A long, straight wire of radius a carries a current distributed uniformly over its cross-section. The ratioof the magnetic fields due to…Physics· Magnetism· Moderate· figure
  5. 5The minimum time in which the potential energy of a particle executing SHM changes from maximum to minimum is 5 s. The time period of SHM…Physics· Simple Harmonic Motion· Moderate· figure
  6. 6The magnifying power of a telescope with tube length 60 cm is5. The focal length in cm of its eye piece is 2f. Find f?Physics· Ray Optics· Moderate· figure
  7. 7A beam of electromagnetic radiation of intensity [IMAGE] is comprised of wavelength, [IMAGE] It falls normally on a metal (work function…Physics· Modern physics· Moderate· figure
  8. 8In the arrangement shown in figure, wavelength of light used is [IMAGE]. The distance between slits [IMAGE] The distance between [IMAGE]…Physics· figure
  9. 9Planet P has mass M_P and radius R_P. Planet Q has mass M_P/2. If the escape velocities from the Planets P and Q are equal, then what is…Physics· Mechanics· Moderate· figure
  10. 10A thin uniform rod of mass is hinged at one end. This rod is maintained in horizontal position by colliding very tiny balls each of mass…Physics· Rigid Body Dynamics· Moderate· figure
  11. 11The length of a potentiometer wire is 120 cm and it carries a current of 60 mA. For a cell of emf 5V and internal resistance of $20\Omega$,…Physics· Current Electricity· Moderate· figure
  12. 12Take two infinite planes with same surface charge density. Place them as shown it the figure. The electric field in the region between them…Physics· Electrostatics· Moderate· figure
  13. 13The current $I_{1}$ (in A) flowing through $1\Omega$ resistor in the following circuit isPhysics· Current Electricity· Easy· figure
  14. 14[IMAGE] A and d are the plate area and distance between plates of a parallel plate capacitor repectively. The dielectric constant of…Physics· Electrostatics· Difficult· figure
  15. 15The distance between two slits in a Young's double slit experiment is 3 mm. The distance of the screenfrom the slits is 1 m. Waves of…Physics· Wave Optics· Easy
  16. 16In the figure shown a parallel plate capacitor has a dielectric of width d/2 and dielectric constant K = 2.The other dimensions of the…Physics· Capacitance· Tough· figure
  17. 17In the circuit, if the forward voltage drop for the diode is 0.5V, the current in the circuit will be(approximately) - ifjiFk fy, vxzfoHko…Physics· Electronic devices· Moderate· figure
  18. 18The maximum peak to peak voltage of an AM wave is 24 mV and the minimum peak to peak voltage is8 mV. The modulation factor is.Physics· Communication system· Moderate· figure
  19. 19Both the diodes used in the circuit shown are assumed to be ideal and have negligible resistance whenthese are forward biased. built in…Physics· Electronic devices· Moderate· figure
  20. 20Three metallic plates out of which middle is given a charge Q, as shown in the figure. The outer plates can be earthed with switches S1 and…Physics· Electrostatics· Moderate· figure
  21. 21Three metallic plates are given and middle plate is given charge Q, as shown in the figure. The outer plates can be earthed with switches…Physics· Electrostatics· Moderate· figure
  22. 22Figure shows two identical capacitors each of capacity C in a circuit with two ideal diodes. A 100 voltbattery in connected to the input…Physics· Electronic devices· Moderate· figure
  23. 23An electric field $\overset{\rightarrow}{E} = 4x\overset{\hat{}}{i} - (y^{2} + 1)jN/C$ passes through the box shown in figure. The flux of…Physics· Electrostatics· Tough· figure
  24. 24An electric dipole of moment $\overset{\rightarrow}{p} = ( - \overset{\hat{}}{i} - 3\overset{\hat{}}{j} + 2\overset{\hat{}}{k}) \times…Physics· Electrostatics· Tough· figure
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