JEE Main 202523 Jan, Evening shift

Physics 22Chemistry 22

Physics

Q26The refractive index of the material of a glass prism is √(3). The angle of minimum deviation is equal to the angle of the prism. What is the angle of the…Optics
Q27In photoelectric effect an em-wave is incident on a metal surface and electrons are ejected from the surface. If the work function of the metal is 2.14 eV and…Dual Nature of Matter and Radiation
Q28A galvanometer having a coil of resistance 30 Ω need 20 mA of current for full-scale deflection. If a maximum current of 3 A is to be measured using this…Magnetic Effects of Current and Magnetism
Q29Given below are two statements. One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The binding energy per nucleon is…Atoms and Nuclei
Q30A concave mirror of focal length f in air is dipped in a liquid of refractive index μ. Its focal length in the liquid will be:Optics
Q31A massless spring gets elongated by amount x₁ under a tension of 5 N. Its elongation is x₂ under the tension of 7 N. For the elongation of (5x₁ - 2x₂), the…Properties of Solids and Liquids
Q32If a satellite orbiting the Earth is 9 times closer to the Earth than the Moon, what is the time period of rotation of the satellite? Given rotational time…Gravitation
Q33Water flows in a horizontal pipe whose one end is closed with a valve. The reading of the pressure gauge attached to the pipe is P₁. The reading of the…Properties of Solids and Liquids
Q34A plane electromagnetic wave of frequency 20 MHz travels in free space along the +x direction. At a particular point in space and time, the electric field…Electromagnetic Waves
Q35A circular disk of radius R meter and mass M kg is rotating around the axis perpendicular to the disk. An external torque is applied to the disk such that…Rotational Motion
Q36Match List - I with List - II. List - I: (A) Permeability of free space, (B) Magnetic field, (C) Magnetic moment, (D) Torsional constant. List - II: (I) [ M…Units and Measurements
Q37The energy of a system is given as E(t) = α³ e^(-β t), where t is the time and β = 0.3 s⁻¹. The errors in the measurement of α and t are 1.2% and 1.6%…Units and Measurements
Q38Two point charges -4 and 4, constituting an electric dipole, are placed at (-9, 0, 0) cm and (9, 0, 0) cm in a uniform electric field of strength 10⁴ N C⁻¹…Electrostatics
Q39Water of mass m gram is slowly heated to increase the temperature from T₁ to T₂. The change in entropy of the water, given specific heat of water is 1 J kg⁻¹…Thermodynamics
Q40The width of one of the two slits in Young's double slit experiment is d while that of the other slit is xd. If the ratio of the maximum to the minimum…Optics
Q41The equation of a transverse wave travelling along a string is y(x, t) = 4.0 sin [20 × 10⁻³x + 600t] mm, where x is in mm and t is in second. The velocity of…Oscillations and Waves
Q43Two charges 7 and -4 are placed at (-7 cm, 0, 0) and (7 cm, 0, 0) respectively. Given, ε₀ = 8.85 × 10⁻¹² C² N⁻¹ m⁻², the electrostatic potential energy of the…Electrostatics
Q45A ball having kinetic energy KE, is projected at an angle of 60° from the horizontal. What will be the kinetic energy of ball at the highest point of its…Kinematics
Q47An air bubble of radius 1.0 mm is observed at a depth of 20 cm below the free surface of a liquid having surface tension 0.095 J/m² and density 10³ kg/m³. The…Properties of Solids and Liquids
Q48A time varying potential difference is applied between the plates of a parallel plate capacitor of capacitance 2.5 μ F. The dielectric constant of the medium…Electromagnetic Waves
Q49In a series LCR circuit, a resistor of 300 Ω, a capacitor of 25 nF and an inductor of 100 mH are used. For maximum current in the circuit, the angular…Electromagnetic Induction and Alternating Currents
Q50A satellite of mass M/2 is revolving around earth in a circular orbit at a height of R/3 from earth surface. The angular momentum of the satellite is…Gravitation