2026176 marks44 questions
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Source: NEET (UG) 2026 Re-Examination, 21 June 2026, Test Booklet Code 50, Physics, published by NTA. The official PDF
A particle of mass M moves along a horizontal x axis from x = 0 to x = L. The coefficient of kinetic friction varies as a function of x as μₖ(x) = μ₀ − αx, where μ₀, α are constants of appropriate dimensions, so that μₖ(L) = 0. The total work done by the frictional force during the motion is nμ₀MgL, where g is the acceleration due to gravity. The value of n is :
For sound waves, if the number of nodes for the 5th harmonic of an open-ended pipe is n and that for the 9th harmonic of the same pipe with one of its ends closed is m, the ratio n/m is :
Consider a long solenoid of length l and radius r. If n is the number of turns per unit length and μ₀ is the permeability of free space, the inductance of the solenoid is :
Consider a particle moving along a straight line, whose position as a function of time is given by s(t) = αt² − βt + γ, where α = 1 ms⁻², β = 6 ms⁻¹ and γ = 5 m. The average speed of the particle, in ms⁻¹, from t = 0 to t = 6 s is :
Consider the following nuclear reaction : ²³⁸U → ²³⁴Th + ⁴He Take masses of ²³⁸U, ²³⁴Th and ⁴He as 238.050 u, 234.043 u and 4.003 u, respectively. The Q value for the reaction, in keV, is : [Given : 1 u = 931.5 MeV c⁻²]
In a solar system, the time-period of revolution of a planet tracing a circular orbit of radius R is proportional to :
Two infinitely long parallel conducting wires A and B carry currents I and 2I, respectively, in the same direction. The wire A has uniform mass per unit length λ and lies on an insulated floor. The wire B is kept fixed at a height h above the floor. The minimum magnitude of h so that the wire A does not rise from the floor is : [g is the acceleration due to gravity and μ₀ is the permeability of free space.]
In an adiabatic expansion, the temperature of one mole of an ideal monatomic gas (γ = 5/3) decreases from 60K to 50K. The work done by the gas in the process is : (Take the universal gas constant as R = 8.3 J mol⁻¹ K⁻¹)