JEE Main 20252 Apr, Evening shift

Physics 21Chemistry 20

Physics

Q26Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Net dipole moment of a polar linear…Electrostatics
Q27A solenoid having area A and length ' l ' is filled with a material having relative permeability 2. The magnetic energy stored in the solenoid is:Magnetic Effects of Current and Magnetism
Q28A sinusoidal wave of wavelength 7.5 cm travels a distance of 1.2 cm along the x -direction in 0.3 sec. The crest P is at x=0 at t=0 sec and maximum…Oscillations and Waves
Q30An electron with mass 'm' with an initial velocity (t=0) v = v₀i (v₀>0) enters a magnetic field B = B₀j. If the initial de-Broglie wavelength at t=0 is λ₀…Dual Nature of Matter and Radiation
Q31Energy released when two deuterons (₁H²) fuse to form a helium nucleus (₂He⁴) is: (Given: Binding energy per nucleon of ₁H² = 1.1 MeV and binding energy per…Atoms and Nuclei
Q32Consider a circular loop that is uniformly charged and has a radius a√(2). Find the position along the positive z -axis of the cartesian coordinate system…Electrostatics
Q33Match List - I with List - II. List - I: (A) Heat capacity of body; (B) Specific heat capacity of body; (C) Latent heat; (D) Thermal conductivity List - II…Thermodynamics
Q36Two water drops each of radius 'r' coalesce to form a bigger drop. If 'T' is the surface tension, the surface energy released in this process is:Properties of Solids and Liquids
Q37The moment of inertia of a circular ring of mass M and diameter r about a tangential axis lying in the plane of the ring is:Rotational Motion
Q38Assuming the validity of Bohr's atomic model for hydrogen like ions the radius of Li⁺⁺ ion in its ground state is given by 1/Xa₀, where X = _ _ _. (Where a₀…Atoms and Nuclei
Q39A bi-convex lens has radius of curvature of both the surfaces same as 1/6 cm. If this lens is required to be replaced by another convex lens having different…Optics
Q40Given a charge q, current I and permeability of vacuum μ₀. Which of the following quantity has the dimension of momentum ?Units and Measurements
Q41If μ₀ and ε₀ are the permeability and permittivity of free space, respectively, then the dimension of (1/(μ₀ε₀)) is:Units and Measurements
Q42Identify the characteristics of an adiabatic process in a monoatomic gas. (A) Internal energy is constant. (B) Work done in the process is equal to the change…Thermodynamics
Q43Two identical objects are placed in front of convex mirror and concave mirror having same radii of curvature of 12 cm, at same distance of 18 cm from the…Optics
Q45In a moving coil galvanometer, two moving coils M₁ and M₂ have the following particulars: R₁ = 5 Ω, N₁ = 15, A₁ = 3.6×10⁻³ m ², B₁ = 0.25 T R₂ = 7 Ω, N₂ = 21…Magnetic Effects of Current and Magnetism
Q46The internal energy of air in 4 m × 4 m × 3 m sized room at 1 atmospheric pressure will be _ _ _ × 10⁶ J. (Consider air as diatomic molecule)Kinetic Theory of Gases
Q47The length of a light string is 1.4 m when the tension on it is 5 N. If the tension increases to 7 N, the length of the string is 1.56 m. The original length…Properties of Solids and Liquids
Q48A wheel of radius 0.2 m rotates freely about its center when a string that is wrapped over its rim is pulled by force of 10 N as shown in figure. The…Rotational Motion
Q49A ray of light suffers minimum deviation when incident on a prism having angle of the prism equal to 60°. The refractive index of the prism material is √(2)…Optics
Q50A satellite of mass 1000 kg is launched to revolve around the earth in an orbit at a height of 270 km from the earth's surface. Kinetic energy of the…Gravitation