JEE Main 20254 Apr, Morning shift

Physics 19Chemistry 21

Physics

Q26In an experiment with a closed organ pipe, it is filled with water by (1/5) th of its volume. The frequency of the fundamental note will change byOscillations and Waves
Q27Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: In photoelectric effect, on increasing the…Dual Nature of Matter and Radiation
Q29The Boolean expression Y = ABC + AC can be realised with which of the following gate configurations. A. One 3-input AND gate, 3 NOT gates and one 2-input OR…Electronic Devices
Q30An alternating current is represented by the equation, i = 100√(2) sin (100π t) ampere. The RMS value of current and the frequency of the given alternating…Electromagnetic Induction and Alternating Currents
Q31When an object is placed 40 cm away from a spherical mirror an image of magnification 1/2 is produced. To obtain an image with magnification of 1/3, the…Optics
Q32Current passing through a wire as function of time is given as I(t) = 0.02t + 0.01 A. The charge that will flow through the wire from t = 1 s to t = 2 s isCurrent Electricity
Q33A body of mass m is suspended by two strings making angles θ₁ and θ₂ with the horizontal ceiling with tensions T₁ and T₂ simultaneously. T₁ and T₂ are related…Laws of Motion
Q34The mean free path and the average speed of oxygen molecules at 300 K and 1 atm are 3 × 10⁻⁷ m and 600 m/s, respectively. Find the frequency of its collisions.Kinetic Theory of Gases
Q35A small mirror of mass m is suspended by a massless thread of length l. Then the small angle through which the thread will be deflected when a short pulse of…Electromagnetic Waves
Q37Two small spherical balls of mass 10 g each with charges -2 μ C and 2 μ C, are attached to two ends of very light rigid rod of length 20 cm. The arrangement…Electrostatics
Q39Two simple pendulums having lengths l₁ and l₂ with negligible string mass undergo angular displacements θ₁ and θ₂, from their mean positions, respectively. If…Oscillations and Waves
Q40Two liquids A and B have θ A and θ B as contact angles in a capillary tube. If K = cos θ A / cos θ B, then identify the correct statement:Properties of Solids and Liquids
Q41Considering the Bohr model of hydrogen like atoms, the ratio of the radius of 5^(th) orbit of the electron in Li²⁺ and He⁺ isAtoms and Nuclei
Q42Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: The kinetic energy needed to project a body…Gravitation
Q43In a Young's double slit experiment, the slits are separated by 0.2 mm. If the slits separation is increased to 0.4 mm, the percentage change of the fringe…Optics
Q44If L and P represent the angular momentum and linear momentum respectively of a particle of mass ' m ' having position vector as r = a(i cos ω t + j sin ω t)…Rotational Motion
Q45In an electromagnetic system, the quantity representing the ratio of electric flux and magnetic flux has dimension of M^(P) L^(Q) T^(R) A^(S), where value of…Units and Measurements
Q49Two slabs with square cross section of different materials (1, 2) with equal sides (l) and thickness d₁ and d₂ such that d₂ = 2d₁ and l > d₂. Considering…Properties of Solids and Liquids
Q50Distance between object and its image (magnified by -1/3) is 30 cm. The focal length of the mirror used is (x/4) cm, where magnitude of value of x is _ _ _Optics