JEE Main 202528 Jan, Evening shift

Physics 18Chemistry 18

Physics

Q26A concave mirror produces an image of an object such that the distance between the object and image is 20 cm. If the magnification of the image is ' -3 '…Optics
Q27A parallel plate capacitor of capacitance 1 μ F is charged to a potential difference of 20 V. The distance between plates is 1 μ m. The energy density between…Electrostatics
Q30Given below are two statements. One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Knowing initial position x₀ and…Oscillations and Waves
Q31The ratio of vapour densities of two gases at the same temperature is 4/25, then the ratio of r.m.s. velocities will be:Kinetic Theory of Gases
Q32Earth has mass 8 times and radius 2 times that of a planet. If the escape velocity from the earth is 11.2 km/s, the escape velocity in km/s from the planet…Gravitation
Q33The kinetic energy of translation of the molecules in 50 g of CO₂ gas at 17°C isKinetic Theory of Gases
Q34A uniform magnetic field of 0.4 T acts perpendicular to a circular copper disc 20 cm in radius. The disc is having a uniform angular velocity of 10π rad s ⁻¹…Electromagnetic Induction and Alternating Currents
Q36In a long glass tube, mixture of two liquids A and B with refractive indices 1.3 and 1.4 respectively, forms a convex refractive meniscus towards A. If an…Optics
Q38Which of the following phenomena can not be explained by wave theory of light ?Dual Nature of Matter and Radiation
Q39The frequency of revolution of the electron in Bohr's orbit varies with n, the principal quantum number asAtoms and Nuclei
Q41A 400 g solid cube having an edge of length 10 cm floats in water. How much volume of the cube is outside the water ? (Given: density of water = 1000 kg m ⁻³)Properties of Solids and Liquids
Q42The magnetic field of an E.M. wave is given by B = ((3)/2 i + 1/2 j)30 sin [ω(t-z/c)] (S.I. Units). The corresponding electric field in S.I. units is:Electromagnetic Waves
Q43A balloon and its content having mass M is moving up with an acceleration 'a'. The mass that must be released from the content so that the balloon starts…Laws of Motion
Q44A uniform rod of mass 250 g having length 100 cm is balanced on a sharp edge at 40 cm mark. A mass of 400 g is suspended at 10 cm mark. To maintain the…Rotational Motion
Q45Match List - I with List - II. List - I: (A) Angular Impulse (B) Latent Heat (C) Electrical resistivity (D) Electromotive force List - II: (I) [M⁰L²T⁻²] (II)…Units and Measurements
Q46An electric dipole of dipole moment 6×10⁻⁶ Cm is placed in uniform electric field of magnitude 10⁶ V/m. Initially, the dipole moment is parallel to electric…Electrostatics
Q48The volume contraction of a solid copper cube of edge length 10 cm, when subjected to a hydraulic pressure of 7×10⁶ Pa, would be _ _ _ mm ³. (Given bulk…Properties of Solids and Liquids
Q50A thin transparent film with refractive index 1.4, is held on circular ring of radius 1.8 cm. The fluid in the film evaporates such that transmission through…Optics