2025100 marks25 questions
19 of its 25 questions are here. The rest have a figure or are still being checked, so for now they're only in the official PDF.
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Source: JEE (Main) 2025, Paper 1 (B.E./B.Tech), 4 Apr 2025 Shift 2, Physics, published by NTA. The official PDF
For the determination of refractive index of glass slab, a travelling microscope is used whose main scale contains 300 equal divisions equals to 15 cm. The vernier scale attached to the microscope has 25 divisions equals to 24 divisions of main scale. The least count (LC) of the travelling microscope is (in cm) :
In an electromagnetic system, a quantity defined as the ratio of electric dipole moment and magnetic dipole moment has dimension of [Mᴾ LQ TR AS]. The value of P and Q are :
A wheel is rolling on a plane surface. The speed of a particle on the highest point of the rim is 8 m/s. The speed of the particle on the rim of the wheel at the same level as the centre of wheel, will be :
An object is kept at rest at a distance of 3R above the earth’s surface where R is earth’s radius. The minimum speed with which it must be projected so that it does not return to earth is : (Assume M = mass of earth, G = Universal gravitational constant)
Consider a rectangular sheet of solid material of length l = 9 cm and width d = 4 cm. The coefficient of linear expansion is α = 3.1 × 10⁻⁵ K⁻¹ at room temperature and one atmospheric pressure. The mass of sheet m = 0.1 kg and the specific heat capacity Cᵥ = 900 J kg⁻¹ K⁻¹. If the amount of heat supplied to the material is 8.1 × 10² J then change in area of the rectangular sheet is :
A cylindrical rod of length 1 m and radius 4 cm is mounted vertically. It is subjected to a shear force of 10⁵ N at the top. Considering infinitesimally small displacement in the upper edge, the angular displacement θ of the rod axis from its original position would be: (shear moduli, G = 10¹⁰ N/m²)
Displacement of a wave is expressed as x(t) = 5 cos (628t + π/2) m. The wavelength of the wave when its velocity is 300 m/s is : (π = 3.14)
There are ‘n’ number of identical electric bulbs, each is designed to draw a power p independently from the mains supply. They are now joined in series across the mains supply. The total power drawn by the combination is :