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JEE Main 27 Jan Shift 2 2024 Question Paper with Solution PDF- Download Here
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Amrit Raj

| Updated On - Nov 19, 2024

JEE Main 27 Jan Shift 2 2024 Question Paper with Solutions and Answer Key PDF is available here. NTA conducted JEE Main 2024 Jan 27 Shift 2 exam from 3 PM to 6 PM. The question paper for JEE Main 2024 Jan 27 Shift 2 includes 90 questions equally divided into Physics, Chemistry and Maths. Candidates must attempt 75 questions in a 3-hour time duration. The official JEE Main 2024 paper 1 question paper for Jan 27 Shift 1 provided in the article below.

JEE Main 27 Jan Shift 2 2024 Question Paper PDF Download

JEE Main 2024 Question Paper with Answer Key 27 Jan Shift 2 download iconDownload Check Solutions

JEE Main 27 Jan Shift 2 2024 Questions with Solution

Question No. Question Options Correct Answer Solution
1 Considering only the principal values of inverse trigonometric functions, the number of positive real values of x satisfying arctan(x) + arctan(2x) = π/4 is: More than 2, 1, 2, 0 1 Given tan⁻¹(x) + tan⁻¹(2x) = π/4, we simplify to find 2x = (1-x)/(1+x). Solving this quadratic equation, only one positive solution x = (-3 + sqrt(17))/4 exists.
2 Consider the function f: (0,2) -> R defined by f(x) = x^2 + 2/x, and the function g(x) by min{f(t)} for 0 < t ≤ x, 0 < x ≤ 1 and g(x) = (3/2 + x) for 1 < x <2. Which statement about g is correct? g is continuous but not differentiable at x = 1, g is not continuous for all x in (0,2), g is neither continuous nor differentiable at x = 1, g is continuous and differentiable for all x in (0,2) g is continuous but not differentiable at x = 1 The left-hand and right-hand limits equal g(1) for continuity at x = 1, but differentiability fails as derivatives from each side do not match at x = 1.
3 Let R be the region between lines 3x - y + 1 = 0 and x + 2y - 5 = 0 containing the origin. Find values of a for which (a^2, a + 1) lie in R: (−3,−1) ∪ (-1/3,1), (−3,0) ∪ (-1/3,1), (−3,0) ∪ (2/3,1), (−3,−1) ∪ (-1/3,1) (−3,0) ∪ (-1/3,1) By analyzing inequalities from line equations, we find a in (−3,0) ∪ (-1/3,1).
4 The 20th term from the end of the progression 20, 19.25, 18.5, 17.75, ..., -129.25 is: -118, -110, -115, -100 -115 The sequence is reversed, and the 20th term from the end is found by treating it as a standard arithmetic progression (A.P.) problem.
5 Let f: R - {-1/2} -> R and g: R - {-5/2} -> R be defined as f(x) = (2x + 3) / (2x + 1) and g(x) = |x| + 1 / (2x + 5). What is the domain of f ◦ g? R - {-5/2}, R, R - {-7/4}, R - {-5/2, -7/4} R - {-5/2} Since f(g(x)) is undefined at x = -5/2, we exclude x = -5/2 from the domain of f ◦ g.
6 For 0 < a < 1, find the value of the integral ∫[0,π] dx / (1 - 2a cos(x) + a^2): (π / (1 - a^2)), (π / (1 + a^2)), (π2 / (π + a^2)), (π2 / (π - a^2)) π / (1 - a^2) To solve the integral, complete the square in the denominator and use a trigonometric substitution to simplify.
7 Let g(x) = 3f(x/3) + f(3 - x) where f''(x) > 0 for all x in (0,3). If g is decreasing in (0, α) and increasing in (α,3), what is 8α? 24, 0, 18, 20 18 Using f''(x) > 0, g(x) is analyzed for intervals where it is decreasing and increasing to find α = 9/4, leading to 8α = 18.
8 If lim(x→0) (3 + α sin(x) + β cos(x) + log(1 - x)) / (3 tan^2(x)) = 1/3, then 2α - β is equal to: 2, 7, 5, 1 5 Using Taylor series expansions around x = 0, solve for α and β to get 2α - β = 5.
9 If α and β are the roots of x² - x - 1 = 0, and Sn = 2023α^n + 2024β^n, then: 2S₁₂ = S₁₁ + S₁₀, S₁₂ = S₁₁ + S₁₀, 2S₁₁ = S₁₂ + S₁₀, S₁₁ = S₁₀ + S₁₂ S₁₂ = S₁₁ + S₁₀ Using the recurrence relation for roots of quadratic equations, we find S₁₂ = S₁₁ + S₁₀.
10 Let A and B be two finite sets with m and n elements, respectively. If the total subsets of set A are 56 more than B's subsets, then the distance of the point P(m,n) from Q(-2,-3) is: 10, 6, 4, 8 10 Solving 2^m = 2^n + 56, we find m = 6, n = 3. The distance between points P(6,3) and Q(-2,-3) is calculated as 10.
11 The values of α for which the determinant |1 3 2; α+3 2 1; 1 1 3| = 0 lie in the interval: (-2,1), (-3,0), (-3/2,3/2), (0,3) (-3,0) Expanding the determinant and solving for α yields the interval (-3,0).
12 An urn contains 6 white and 9 black balls. Two successive draws of 4 balls are made without replacement. The probability that the first draw gives all white balls and the second draw gives all black balls is: 5/256, 5/715, 3/715, 3/256 3/715 The probability of drawing 4 white balls in the first draw is 15/1365. After removing 4 white balls, there are 9 black balls left. The probability of drawing 4 black balls in the second draw is 126/330. The required probability is the product of these probabilities, giving 3/715.
13 The integral ∫(x^8 - x^2) dx / ((x^12 + 3x^6 + 1) arctan(x^3 + 1/x^3)) is equal to: log(arctan(x^3 + 1/x^3)^(1/3) + C), log(arctan(x^3 + 1/x^3)^(1/2) + C), log(arctan(x^3 + 1/x^3) + C), log(arctan(x^3 + 1/x^3)^3 + C) log(arctan(x^3 + 1/x^3)^(1/3) + C) Using the substitution u = arctan(x^3 + 1/x^3), we simplify the integral to du/u, which evaluates to log(u) + C. The final answer is in the given form.
14 If 2tan^2(θ) - 5sec(θ) = 1 has exactly 7 solutions in the interval [0, nπ/2] for the least value of n ∈ N, then Σ(k=1 to n) k / 2k is equal to: 1/215(214 - 14), 1/214(215 - 15), 1 - 15/213, 1/213(214 - 15) 1/213(214 - 15) Setting sec(θ) = t, we solve the quadratic equation to find that n = 13. Using the formula for the sum, Σ = (1/213) * (214 - 15).
15 The position vectors of the vertices A, B, and C of a triangle are A = 2i - 3j + 3k, B = 2i + 2j + 3k, and C = -i + j + 3k respectively. If ℓ is the length of the angle bisector AD of ∠BAC, then 2ℓ^2 equals: 49, 42, 50, 45 45 Using the position vectors and midpoint formula, we find the length of AD and calculate 2ℓ^2 as 45.
16 If y = y(x) is the solution curve of the differential equation (x^2 - 4) dy - (y^2 - 3y) dx = 0, x > 2, y(4) = 3/2, and the slope of the curve is never zero, then y(10) equals: 3/(1 + 8^(1/4)), 3/(1 + 2√2), 3/(1 - 2√2), 3/(1 - 8^(1/4)) 3/(1 + 8^(1/4)) Separating variables and solving the differential equation, we integrate both sides and substitute x = 10 to find y(10) = 3/(1 + 8^(1/4)).
17 If e₁ is the eccentricity of the hyperbola x²/16 - y²/9 = 1 and e₂ is the eccentricity of the ellipse x²/a² + y²/b² = 1, which passes through the foci of the hyperbola and satisfies e₁e₂ = 1, then the length of the chord of the ellipse parallel to the x-axis and passing through (0,2) is: 4√5, 8√5/3, 10√5/3, 3√5 10√5/3 For the ellipse x²/25 + y²/9 = 1, using the formula for the length of the chord parallel to the x-axis, we find the answer as 10√5/3.
18 Let α = (4!)! / (4!)^3! and β = (5!)! / (5!)^4!. Then: α ∈ N and β ∉ N, α ∉ N and β ∈ N, α ∈ N and β ∈ N, α ∉ N and β ∉ N α ∈ N and β ∈ N Both α and β represent valid combinatorial expressions for arranging groups, making both natural numbers.
19 Let the position vectors of vertices A, B, and C of a triangle be 2i + 2j + k, i + 2j + 2k, and 2i + j + 2k respectively. Let l₁, l₂, and l₃ be lengths of perpendiculars from the orthocenter to sides AB, BC, and CA. Then l₁² + l₂² + l₃² equals: 1/5, 1/2, 1/4, 1/3 1/2 Using midpoint formula and perpendicular distance calculations, we find l₁² + l₂² + l₃² = 1/2.
20 The mean and standard deviation of 15 observations were found to be 12 and 3 respectively. On rechecking, it was found that an observation was read as 10 instead of 12. If µ and σ² denote the mean and variance of the correct observations, then 15(µ + µ² + σ²) is equal to: 2521 2521 Correcting the observation and recalculating mean and variance, we find 15(µ + µ² + σ²) = 2521.
21 The values of α for which lines 2x - y + 3 = 0, 6x + 3y + 1 = 0, and ax + 2y - 2 = 0 do not form a triangle are: (-2,1), (-3,0), (-3/2,3/2), (0,3) (-3,0) For lines not to form a triangle, they must be concurrent or parallel. Solving for α, we get (-3,0).
22 If the area of the region {(x, y) : 0 ≤ y ≤ min(2x, 6x - x²)} is A, then 12A is equal to: 304 304 We calculate the area by integrating the expression and find A. Then, 12A is calculated to be 304.
23 Let Λ be a 2×2 real matrix and I be the identity matrix of order 2. If the roots of the equation |Λ - xI| = 0 are -1 and 3, then the sum of the diagonal elements of the matrix Λ² is: 10 10 Using the trace and determinant properties of Λ and calculating Λ², we find the sum of the diagonal elements as 10.
24 If the sum of squares of all real values of α, for which the lines 2x - y + 3 = 0, 6x + 3y + 1 = 0, and ax + 2y - 2 = 0 do not form a triangle is p, then the greatest integer less than or equal to p is: 32 32 Solving for the concurrent or parallel condition of these lines, we find p and the integer part is 32.
25 The coefficient of x^2012 in the expansion of (1 - x)^2008(1 + x + x²)^2007 is: 0 0 Analyzing the terms in the expansion, we see there is no term for x^2012, hence the coefficient is 0.
26 If the solution curve of the differential equation dy/dx = (x + y - 2)/(x - y) passes through the point (2, 1), the value of y(10) equals: 3/(1 + (8)^1/4) 3/(1 + (8)^1/4) Solving the differential equation and substituting x = 10, we find y(10) as 3/(1 + (8)^1/4).
27 Let f(x) = ∫₀ˣ g(t) log((1 - t)/(1 + t)) dt, where g is a continuous odd function. If ∫(-π/2 to π/2) (f(x) x² cos(x)/(1 + e^x)) dx = π/2 - α, then α is equal to: 2 2 Using the properties of odd functions and simplifying the integral, we find that α = 2.
28 Consider a circle (x - α)² + (y - β)² = 50, where α, β > 0. If the circle touches the line y + x = 0 at point P, whose distance from the origin is 4√2, then (α + β)² is equal to: 100 100 Using the distance and tangency conditions, we find that (α + β)² = 100.
29 The lines (x - 2)/1 = (y - 1)/(-1) = (z - 7)/8 and (x + 3)/4 = (y + 2)/3 = (z + 2)/1 intersect at the point P. If the distance of P from the line (x + 1)/2 = (y - 1)/3 = (z - 1)/1 is l, then 14l² is equal to: 108 108 Calculating the intersection point and using the distance formula, we find 14l² = 108.
30 Let the complex numbers α and 1/α lie on the circles |z - z₀| = 2 and |z - z₀| = 4 respectively, where z₀ = 1 + i. Then, the value of 100|α|² is: 20 20 Since α and 1/α lie on concentric circles with known radii, |α| = 2. Thus, 100|α|² = 20.
31 The equation of state of a real gas is given by P + (a/V²)(V - b) = RT, where P, V, and T are pressure, volume, and temperature. The dimensions of a/b² are similar to: P, PV, RT, R P Using dimensional analysis on a/b², we find it has the same dimensions as pressure P.
32 The total kinetic energy of 1 mole of oxygen at 27°C is: 6845.5 J, 5942.0 J, 6232.5 J, 5670.5 J 6232.5 J Using the formula E = (5/2)nRT for a diatomic gas at 300 K, we find the total kinetic energy as 6232.5 J.
33 The primary side of a transformer is connected to a 230 V, 50 Hz supply. Turns ratio of primary to secondary winding is 10:1. Load resistance on the secondary side is 46 Ω. The power consumed in it is: 12.5 W, 10.0 W, 11.5 W, 12.0 W 11.5 W Using the turns ratio to find V₂ and calculating power with P = V₂²/R, we find it to be 11.5 W.
34 During an adiabatic process, the pressure of a gas is found to be proportional to the cube of its absolute temperature. The ratio of Cp/Cv for the gas is: 5/3, 3/2, 7/5, 9/7 3/2 Using the adiabatic relation and the given condition, we derive that the ratio of Cp/Cv (γ) is 3/2.
35 The threshold frequency of a metal with work function 6.63 eV is: 16 ×10¹⁵ Hz, 16 ×10¹² Hz, 1.6 × 10¹² Hz, 1.6 × 10¹⁵ Hz 1.6 × 10¹⁵ Hz Using E = hν₀ with work function converted to joules, we find ν₀ as 1.6 × 10¹⁵ Hz.
36 A current of 200 µA deflects the coil of a moving coil galvanometer through 60°. The current to cause deflection through π/10 radians is: 30 µA, 120 µA, 60 µA, 180 µA 60 µA Using proportionality of current and angle, we find the required current as 60 µA.
37 The atomic mass of 6C¹² is 12.000000 u and that of 6C¹³ is 13.003354 u. The required energy to remove a neutron from 6C¹³, if the mass of the neutron is 1.008665 u, will be: 62.5 MeV, 6.25 MeV, 4.95 MeV, 49.5 MeV 4.95 MeV Using mass defect and E = ∆m x 931.5 MeV/u, we find the energy required as 4.95 MeV.
38 A ball suspended by a thread swings in a vertical plane so that its acceleration in the extreme and lowest position are equal. The angle (θ) of deflection in the extreme position is: tan⁻¹(√2), 2tan⁻¹(1/2), tan⁻¹(1/2), 2tan⁻¹(1/√5) 2tan⁻¹(1/2) Using energy conservation and solving for θ, we find it as 2tan⁻¹(1/2).
39 Three voltmeters are joined as shown. When a potential difference is applied across A and B, their readings are V₁, V₂, and V₃. Choose the correct option. V₁ = V₂, V₁ = V₃ - V₂, V₁ + V₂ > V₃, V₁ + V₂ = V₃ V₁ + V₂ = V₃ Applying Kirchhoff’s Voltage Law across the loop, we find that V₁ + V₂ = V₃.
40 The total kinetic energy of 1 mole of oxygen at 27°C is: 6845.5 J, 5942.0 J, 6232.5 J, 5670.5 J 6232.5 J Using the formula E = (5/2)nRT for a diatomic gas at 300 K, we find the total kinetic energy as 6232.5 J.
41 Given that the angular speed of the moon in its orbit about the earth is greater than that of the earth around the sun, identify the reason. Shorter period of orbit Shorter period of orbit Angular speed ω is inversely proportional to time period. Since the moon's period is shorter, ωmoon > ωearth.
42 The primary side of a transformer is connected to 230 V, 50 Hz supply with a turns ratio of 10:1. Load resistance is 46 Ω. The power consumed is: 12.5 W, 10 W, 11.5 W, 12 W 11.5 W Using turns ratio and calculating V₂, then power with P = V₂²/R, we find it as 11.5 W.
43 During an adiabatic process, the pressure of a gas is proportional to the cube of its absolute temperature. The ratio of Cp/Cv is: 5/3, 3/2, 7/5, 9/7 3/2 Using the adiabatic relation and condition given, we derive γ = Cp/Cv as 3/2.
44 The threshold frequency of a metal with work function 6.63 eV is: 16 ×10¹⁵ Hz, 16 ×10¹² Hz, 1.6 × 10¹² Hz, 1.6 × 10¹⁵ Hz 1.6 × 10¹⁵ Hz Using E = hν₀ with work function converted to joules, we find ν₀ as 1.6 × 10¹⁵ Hz.
45 A current of 200 µA deflects the coil of a moving coil galvanometer through 60°. The current to cause deflection through π/10 radians is: 30 µA, 120 µA, 60 µA, 180 µA 60 µA Using proportionality of current and angle, we find the required current as 60 µA.
46 The atomic mass of 6C¹² is 12.000000 u and that of 6C¹³ is 13.003354 u. The required energy to remove a neutron from 6C¹³, if the mass of the neutron is 1.008665 u, will be: 62.5 MeV, 6.25 MeV, 4.95 MeV, 49.5 MeV 4.95 MeV Using mass defect and E = ∆m x 931.5 MeV/u, we find the energy required as 4.95 MeV.
47 A ball suspended by a thread swings in a vertical plane so that its acceleration in the extreme and lowest position are equal. The angle (θ) of deflection in the extreme position is: tan⁻¹(√2), 2tan⁻¹(1/2), tan⁻¹(1/2), 2tan⁻¹(1/√5) 2tan⁻¹(1/2) Using energy conservation and solving for θ, we find it as 2tan⁻¹(1/2).
48 Three voltmeters are joined as shown. When a potential difference is applied across A and B, their readings are V₁, V₂, and V₃. Choose the correct option. V₁ = V₂, V₁ = V₃ - V₂, V₁ + V₂ > V₃, V₁ + V₂ = V₃ V₁ + V₂ = V₃ Applying Kirchhoff’s Voltage Law across the loop, we find that V₁ + V₂ = V₃.
49 The total kinetic energy of 1 mole of oxygen at 27°C is: 6845.5 J, 5942.0 J, 6232.5 J, 5670.5 J 6232.5 J Using the formula E = (5/2)nRT for a diatomic gas at 300 K, we find the total kinetic energy as 6232.5 J.
50 The primary side of a transformer is connected to 230 V, 50 Hz supply with a turns ratio of 10:1. Load resistance is 46 Ω. The power consumed is: 12.5 W, 10 W, 11.5 W, 12 W 11.5 W Using turns ratio and calculating V₂, then power with P = V₂²/R, we find it as 11.5 W.


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JEE Main 27 Jan Shift 2 2024 Paper Analysis

JEE Main 2024 Jan 27 Shift 2 paper analysis for B.E./ B.Tech is updated here with details on the difficulty level of the exam, topics with the highest weightage in the exam, section-wise difficulty level, etc.

JEE Main 2024 Question Paper Pattern

Feature Question Paper Pattern
Examination Mode Computer-based Test
Exam Language 13 languages (English, Hindi, Assamese, Bengali, Gujarati, Kannada, Malayalam, Marathi, Odia, Punjabi, Tamil, Telugu, and Urdu)
Number of Sections Three- Physics, Chemistry, Mathematics
Exam Duration 3 hours
Sectional Time Limit None
Total Marks 300 marks
Total Number of Questions Asked 90 Questions
Total Number of Questions to be Answered 75 questions
Type of Questions MCQs and Numerical Answer Type Questions
Section-wise Number of Questions Physics- 20 MCQs and 10 numerical type,
Chemistry- 20 MCQs and 10 numerical type,
Mathematics- 20 MCQs and 10 numerical type
Marking Scheme +4 for each correct answer
Negative Marking -1 for each incorrect answer

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JEE Main 2024 Question Paper Session 1 (January)

Those appearing for JEE Main 2024 can use the links below to practice and keep track of their exam preparation level by attempting the shift-wise JEE Main 2024 question paper provided below.

Exam Date and Shift Question Paper PDF
JEE Main 24 Jan Shift 2 2024 Question Paper Check Here
JEE Main 27 Jan Shift 1 2024 Question Paper Check Here
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JEE Main Previous Year Question Paper

JEE Main Questions

1.
An electron rotates in a circle around a nucleus having positive charge Ze. Correct relation between total energy (E) of electron to its potential energy (U) is:

    • E = 2U
    • 2E = 3U
    • E = U
    • 2E = U

    2.
    If G be the gravitational constant and u be thee nergy density then which of the following quantity have the dimension as that the \(\sqrt{UG}\)

      • Pressure gradient per unit mass
      • Force per unit mass
      • Gravitational potential
      • Energy per unit mass

      3.
      In a co-axial straight cable, the central conductor and the outer conductor carry equal currents in opposite directions. The magnetic field is zero.

        • inside the outer conductor
        • in between the two conductors
        • outside the cable
        • inside the inner conductor

        4.
        Following gates section is connected in a complete suitable circuit.
        Circuit
        For which of the following combination, bulb will glow (ON):

          • A = 0, B = 1, C = 1, D = 1
          • A = 1, B = 0, C = 0, D = 0
          • A = 0, B = 0, C = 0, D = 1
          • A = 1, B = 1, C = 1, D = 0

          5.
          Match list-I with list-II:
          List-IList-II
          (A) Kinetic energy of planet\(- \frac{GMm}{a}\)
          (B) Gravitational Potential energy of Sun-planet system\(- \frac{GMm}{2a}\)
          (C) Total mechanical energy of planet\(\frac{GM}{r}\)
          (D) Escape energy at the surface of planet for unit mass object\(- \frac{GMm}{2a}\)
          (Where a = radius of planet orbit, r = radius of planet, M = mass of Sun, m = mass of planet) Choose the correct answer from the options given below:

            • (A) – II, (B) – I, (C) – IV, (D) – III
            • (A) – III, (B) – IV, (C) – I, (D) – II
            • (A) – I, (B) – IV, (C) – II, (D) – III
            • (A) – I, (B) – II, (C) – III, (D) – IV

            6.
            The angle between vector \( \vec{Q} \) and the resultant of \( (2\vec{Q} + 2\vec{P}) \) and \( (2\vec{Q} - 2\vec{P}) \) is:

              • \( 0^\circ \)
              • \( \tan^{-1}\left(\frac{2\vec{Q} - 2\vec{P}}{2\vec{Q} + 2\vec{P}}\right) \)
              • \( \tan^{-1}\left(\frac{P}{Q}\right) \)
              • \( \tan^{-1}\left(\frac{2Q}{P}\right) \)

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