Practice/Question bank/JEE Main

JEE Main practice questions

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

1. 1Light of wavelength 600 mm is incident upon a single slit with width[IMAGE]. The figure shows the pattern observed on a screen positioned 2…Physics· Wave Optics· Moderate· figure
2. 2A point object in air is in front of the curved surface of a plano-convex lens. The radius of curvature of the curved surface is 30 cm and…Physics· Ray Optics· Moderate· figure
3. 3In the arrangement shown in figure, wavelength of light used is[IMAGE]. The distance between slits [IMAGE] is [IMAGE] The distance between…Physics· Wave Optics· Moderate· figure
4. 4If an object is placed at 20 cm in front of a half thin convex lens of focal length 10 cm as shown in figure then taking object position as…Physics· Ray Optics· Moderate· figure
5. 5In a double-slit experiment, at a certain point on the screen the path difference between the two interfering waves is [IMAGE] of a…Physics· Wave Optics· Moderate· figure
6. 6A reflecting surface is represented by the equation [IMAGE] A ray travelling horizontally becomes vertical after reflection. The…Physics· Ray Optics· Moderate· figure
7. 7In the shown figure a ray of light enters the face XY of a right angered prism at grazing incident. It emerges from the adjacent face. YZ…Physics· Ray Optics· Moderate· figure
8. 8In the shown figure three slits, separated by [IMAGE] and illuminated by monochromatic parallel beam of light of wavelength[IMAGE]. P is a…Physics· Wave Optics· Moderate· figure
9. 9In a single slit diffraction of different light of wavelength [IMAGE] by a slit of with t, the size of the central maximum on a screen at a…Physics· Wave Optics· Moderate· figure
10. 10A 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
11. 11Nuclei of radioactive element A are produced at rate at any time t. The element A has decay constant. Let N be the number of nuclei of…Physics· Nuclear Physics· Moderate· figure
12. 12In the given circuit, value of Y isPhysics· Electronic device· Moderate· figure
13. 13The ratio of the longest and shortest wavelengths of the Lyman series is.Physics· Atomic physics· Moderate· figure
14. 14The graph which depicts the results of Rutherford gold foil experiment with α -particles is: α -particles is: Y = Number of scattered alpha…Physics· Atomic physics· Easy· figure
15. 15When photon of energy [IMAGE] strikes the surface of a metal A, the ejected photoelectrons have maximum kinetic energy Ta eV and de-Broglie…Physics· Dual Nature of Matter· Moderate· figure
16. 16Boolean relation at the output stage-Y for the following circuit isPhysics· Electronic device· Moderate· figure
17. 17The time period of revolution of electron in its ground state orbit in a hydrogen atom is[IMAGE]. The frequency of revolution of the…Physics· Atomic physics· Moderate· figure
18. 18A beam of electromagnetic radiation of intensity [IMAGE] is comprised of wavelength, [IMAGE] It falls normally on a metal (work…Physics· Dual Nature of Matter· Moderate· figure
19. 19The activity of a radioactive sample falls from [IMAGE] to [IMAGE] in 30 minutes. Its half life is close toPhysics· Nuclear Physics· Moderate· figure
20. 20[IMAGE] is maximum isPhysics· Nuclear physics· Moderate· figure
21. 21In the circuit, if the forward voltage drop for the diode is [IMAGE] the current in the circuit will be (approximately)Physics· electronic device· Easy· figure
22. 22Suppose the potential energy between electron and proton at a distance r is given by [IMAGE] where k is constant, e is charge of proton and…Physics· Atomic Physics· Tough· figure
23. 23An electron (of mass m) and a photon have the same energy E in the range of a few[IMAGE]. The ratio of the de-Broglie wavelength associated…Physics· Dual Nature of Matter· Moderate· figure
24. 24The maximum peak to peak voltage of an AM wave is [IMAGE] and the minimum peak to peak voltage is[IMAGE]. The modulation factor is 10x.…Physics· Communication system· Moderate· figure