JEE Main 202529 Jan, Evening shift

Physics 17Chemistry 24

Physics

Q26Given below are two statements. One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Three identical spheres of same mass…Work, Energy and Power
Q27A convex lens made of glass (refractive index = 1.5) has focal length 24 cm in air. When it is totally immersed in water (refractive index = 1.33), its focal…Optics
Q28A sand dropper drops sand of mass m(t) on a conveyer belt at a rate proportional to the square root of speed (v) of the belt, i.e. dm/dt ∝ √(v). If P is the…Laws of Motion
Q29A cup of coffee cools from 90°C to 80°C in t minutes when the room temperature is 20°C. The time taken by the similar cup of coffee to cool from 80°C to 60°C…Thermodynamics
Q30The difference of temperature in a material can convert heat energy into electrical energy. To harvest the heat energy, the material should haveCurrent Electricity
Q32Match List - I with List - II. List - I: (A) Young's Modulus, (B) Torque, (C) Coefficient of Viscosity, (D) Gravitational Constant. List - II: (I) ML⁻¹T⁻¹…Units and Measurements
Q33In an experiment with photoelectric effect, the stopping potential,Dual Nature of Matter and Radiation
Q35Given below are two statements. One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): With the increase in the pressure of…Thermodynamics
Q36A capacitor, C₁ = 6 μ F is charged to a potential difference of V₀ = 5 V using a 5V battery. The battery is removed and another capacitor, C₂ = 12 μ F is…Electrostatics
Q39A point charge causes an electric flux of -2 × 10⁴ Nm²C⁻¹ to pass through a spherical Gaussian surface of 8.0 cm radius, centred on the charge. The value of…Electrostatics
Q42Two bodies A and B of equal mass are suspended from two massless springs of spring constant k₁ and k₂, respectively. If the bodies oscillate vertically such…Oscillations and Waves
Q45Three equal masses m are kept at vertices (A, B, C) of an equilateral triangle of side a in free space. At t = 0, they are given an initial velocity V A = V₀…Rotational Motion
Q46The magnetic field inside a 200 turns solenoid of radius 10 cm is 2.9 × 10⁻⁴ Tesla. If the solenoid carries a current of 0.29 A, then the length of the…Magnetic Effects of Current and Magnetism
Q47Two planets, A and B are orbiting a common star in circular orbits of radii R A and R B, respectively, with R B = 2R A. The planet B is 4√(2) times more…Gravitation
Q48Two cars P and Q are moving on a road in the same direction. Acceleration of car P increases linearly with time whereas car Q moves with a constant…Kinematics
Q49A physical quantity Q is related to four observables a, b, c, d as follows: Q = (ab⁴)/cd where, a = (60 ± 3) Pa; b = (20 ± 0.1) m; c = (40 ± 0.2) Nsm⁻² and d…Units and Measurements
Q50A parallel plate capacitor consisting of two circular plates of radius 10 cm is being charged by a constant current of 0.15 A. If the rate of change of…Electrostatics