2026100 marks25 questions
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Source: JEE (Main) 2026, Paper 1 (B.E./B.Tech), 2 Apr 2026 Shift 1, Physics, published by NTA. The official PDF
The dimensional formula of 1/2 ε₀ E² (ε₀ = permittivity of vacuum and E = electric field) is MᵃLᵇTᶜ. The value of 2a − b + c = ________.
The diameter of a wire measured by a screw gauge of least count 0.001 cm is 0.08 cm. The length measured by a scale of least count 0.1 cm is 150 cm. When a weight of 100 N is applied to the wire, the extension in length is 0.5 cm, measured by a micrometer of least count 0.001 cm. The error in the measured Young’s modulus is α × 10⁹ N/m². The value of α is ________. (Ignore the contribution of the load to Young’s modulus error calculation)
The velocity of a particle is given as v⃗ = −x î + 2y ĵ − z k̂ m/s. The magnitude of acceleration at point (1, 2, 4) is ________ m/s².
The position of an object having mass 0.1 kg as a function of time t is given as r⃗ = (10t² î + 5t³ ĵ) m. At t = 1 s, which of the following statements are correct?
A particle is rotating in a circular path and at any instant its motion can be described as θ = 5t⁴/40 − t³/3. The angular acceleration of the particle after 10 seconds is ________ rad/s².
Heat is supplied to a diatomic gas at constant pressure. Then the ratio of ΔQ : ΔU : ΔW is ________.
Two charged conducting spheres S₁ and S₂ of radii 8 cm and 18 cm are connected to each other by a wire. After equilibrium is established, the ratio of electric fields on S₁ and S₂ spheres are Eₛ₁ and Eₛ₂ respectively. The value of Eₛ₁/Eₛ₂ is ________.
The equation of a plane progressive wave is given by y = 5 cos π(200t − x/150) where x and y are in cm and t is in second. The velocity of the wave is ________ m/s.