202540 marks10 questions
9 of its 10 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), 22 Jan 2025 Shift 2, Physics, published by NTA. The official PDF
Which one of the following is the correct dimensional formula for the capacitance in F ? M, L, T and C stand for unit of mass, length, time and charge,
The maximum percentage error in the measurement of density of a wire is [Given, mass of wire = (0.60 ± 0.003)g radius of wire = (0.50 ± 0.01)cm length of wire = (10.00 ± 0.05)cm]
A ball of mass 100 g is projected with velocity 20 m/s at 60° with horizontal. The decrease in kinetic energy of the ball during the motion from point of projection to highest point is
A force F⃗ = 2î + bĵ + k̂ is applied on a particle and it undergoes a displacement î − 2ĵ − k̂. What will be the value of b, if work done on the particle is zero.
A small rigid spherical ball of mass M is dropped in a long vertical tube containing glycerine. The velocity of the ball becomes constant after some time. If the density of glycerine is half of the density of the ball, then the viscous force acting on the ball will be (consider g as acceleration due to gravity)
For a diatomic gas, if γ₁ = (Cp/Cv) for rigid molecules and γ₂ = (Cp/Cv) for another diatomic molecules, but also having vibrational modes. Then, which one of the following options is correct ? (Cp and Cv are specific heats of the gas at constant pressure and volume)
Given below are two statements. One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : A simple pendulum is taken to a planet of mass and radius, 4 times and 2 times, respectively, than the Earth. The time period of the pendulum remains same on earth and the planet. Reason (R) : The mass of the pendulum remains unchanged at Earth and the other planet. In the light of the above statements, choose the correct answer from the options given below :
A series LCR circuit is connected to an alternating source of emf E. The current amplitude at resonant frequency is I₀. If the value of resistance R becomes twice of its initial value then amplitude of current at resonance will be
A proton is moving undeflected in a region of crossed electric and magnetic fields at a constant speed of 2 × 10⁵ ms⁻¹. When the electric field is switched off, the proton moves along a circular path of radius 2 cm. The magnitude of electric field is x × 10⁴ N/C. The value of x is ________. Take the mass of the proton = 1.6 × 10⁻²⁷ kg.