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. 1The temperature needed to excite the hydrogen atoms to first excited level is: (Boltzman constant = 1.381 × 10^-23 J/K)Physics· figure
  2. 2As soon as the valve is opened, the mercury level at B in the tubePhysics· figure
  3. 3An object is moving along x-axis. It is definitely moving towards origin ifPhysics· figure
  4. 4In a common-base configuration of transistor, α = 0.98, I_B = 0.02mA, R_L = 5 kΩ. Output voltage across load isPhysics· figure
  5. 5If the dipole moment vector[IMAGE] of a dipole and the electric field[IMAGE] (uniform) are oriented as shown then which of the following…Physics· figure
  6. 6A circular loop is placed with its plane parallel to a long current carrying wire as shown. Consider the following statements. [IMAGE] (i)…Physics· figure
  7. 7The sinusoidal voltage of an a.c. source is given as V = 100 sin (100πt) cos (100πt). ThenPhysics
  8. 8A conducting loop of area 10 cm^2 and resistance 1 W is kept in a time varying magnetic field, perpendicular to its plane, which is zero at…Physics· figure
  9. 9A charge q is projected from origin with a velocity along positive x-axis in a region having uniform magnetic field directed towards…Physics· figure
  10. 10Two tuning forks are producing 6 beats/s. The frequency of first tuning fork is 256 Hz. Now, first tuning fork is loaded with wax. As a…Physics
  11. 11The variation of internal energy vs density of a diatomic gas is as shown in figure. The molar heat capacity of the gas isPhysics· figure
  12. 12For a particle moving in a straight line, the acceleration versus displacement graph is as shown. The relation between which of the…Physics· figure
  13. 13A convex lens is placed between a fixed object and a fixed screen. The distance between the object and the screen is 150 cm. The real…Physics· figure
  14. 14The mass of an object is 0.074 kg and its volume is 290 cm^3. Its density expressed to the correct significant figures (with rounding off)…Physics· figure
  15. 15The P-V diagram of a cyclic thermodynamic process for an ideal gas is as shown in figure. Its P-T curve will bePhysics· figure
  16. 16A smooth ball of mass m moving with the velocity v_o makes an elastic impact on another smooth ball of mass M at rest. After impact the…Physics· figure
  17. 17Consider two black bodies A and B. The surface temperature of black body A is twice that of B. The wavelength corresponding to maximum…Physics· figure
  18. 18Two produce stationary wave. The minimum distance of antinode from the origin along positive x-axis in terms of the wavelength λ is (y_1…Physics· figure
  19. 19Photons are emitted at the rate of 1.6 × 10^16 per second by a laser source operating at the wavelength of 632.8 nm. The power of source is…Physics· figure
  20. 20A particle is projected vertically upward from the surface of the earth with a speed of [IMAGE], R being the radius of the earth and g is…Physics· figure
  21. 21The positions of are shown on the binding energy curve as shown in figure. The energy released in the fusion reaction will be closest to…Physics· figure
  22. 22In the circuit shown, equivalent resistance between A and B is nR,then value of n isPhysics· figure
  23. 23In the circuit shown V_d - V_a is ( in V )Physics· figure
  24. 24In new system of unit 1 unit mass is 5 kg 1 unit length is 20 meter and 1 unit time is 2 second then 1 unit force in new system is how much…Physics· Moderate· figure
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