JEE Mains 2026 6 April Morning Shift physics questions with solutions

Showing 1–10 of 25 questions

• MCQeasyProperties of solid and fluidElastic Properties of Solids: Stress, Strain and Elastic Moduli

  Two wires A and B have equal cross-sectional areas but are made of different materials. Their Young's moduli satisfy $\frac{Y_{A}}{Y_{B}}=\frac{20}{11}$. The wires are joined and subjected to the same tension, and their elongations are found to be equal. If the length of wire A is 2.2 m, what is the length of wire B?

  Options

  • Option A

    1.10 m

  • Option B

    2.22 m

  • Option C

    1.21 m

  • Option D

    4.44 m

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• MCQeasyWave OpticsHuygens' Principle & Interference of Light

  In a two-wave interference experiment, the path difference between the coherent waves at point A is λ/3, while at point B it is λ/6. Using the equal-intensity condition employed in the given solution, what is the ratio of the resultant intensities $I_{A}$/$I_{B}$?

  Options

  • Option A

    3

  • Option B

    4

  • Option C

    1/3

  • Option D

    1/4

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• NumericeasyWave OpticsPolarisation of Light

  Unpolarized light of intensity I₀ passes through a polarizer, then through an optically active solution, and finally through an analyser. The transmission axes of the polarizer and analyser are parallel. The intensity emerging from the analyser is 3I₀/8. If the solution rotates the plane of polarization by θ relative to the analyser axis, find θ in degrees.

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• MCQeasySimple Harmonic MotionDisplacement, Velocity, Acceleration and Phasor Representation in SHM

  A particle executes simple harmonic motion with amplitude A and time period 5 s. Starting from the positive extreme position x = A, how much time does it take to reach x = A/√2 for the first time?

  Options

  • Option A

    1/4 s

  • Option B

    5/4 s

  • Option C

    5/8 s

  • Option D

    3/8 s

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• MCQmediumCenter of maas , Momentum and CollisionCentre of Mass & Its Calculation

  Three point masses of 2 kg, 3 kg and 15 kg are placed at the vertices shown in the figure. Point P, the midpoint of the perpendicular bisector indicated in the figure, is taken as the origin. What are the coordinates of the centre of mass of the three-particle system?

  

  Options

  • Option A

    (√3/4, 1.25)

  • Option B

    (√3/4, 1.0)

  • Option C

    (0, 0)

  • Option D

    (1.25, 0)

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• MCQmediumsemiconductorDiode Applications & Zener Breakdown

  Q39. The maximum rated power of the LED in the circuit shown in the figure is 2 mW, and the input voltage is 5 V. The current through the series resistance Rₛ is 0.5 mA. What is the minimum value of Rₛ required to ensure that the LED is not damaged?

  

  Options

  • Option A

    6 kΩ

  • Option B

    2 kΩ

  • Option C

    4 kΩ

  • Option D

    5 kΩ

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• IntegermediumCurrent electricityCircuit Theory & Kirchhoff’s Laws

  Refer to the circuit diagram shown in the paper. The heat generated in the 6 Ω resistor during 100 s is α /100 J. Find the nearest integer value of α.

  

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• MCQeasyUnits, Dimensions, Measurements and ErrorsDimensional Analysis and Its Applications

  Q27. The potential energy V of a particle varies with its distance x from a fixed origin according to V = A√x /(x+B), where A and B are constants having appropriate dimensions. What are the dimensions of the product AB?

  Options

  • Option A

    [M L⁵⁄² T⁻²]

  • Option B

    [M³⁄² L⁵⁄² T⁻²]

  • Option C

    [M L² T⁻²]

  • Option D

    [M L⁷⁄² T⁻²]

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• MCQmediumWork , Power and EnergyVertical Circular Motion

  A smooth inclined track ends in a vertical circular loop of radius R, as shown in the figure. A small body is released from rest from a height h above the lowest point of the loop. At the highest point of the loop, the body exerts a normal force on the track equal to three times its weight. If h = αR, what is the value of α?

  

  Options

  • Option A

    2

  • Option B

    4

  • Option C

    3

  • Option D

    6

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• MCQeasyAtomic Structure and X-raysAtomic Structure & Bohr's Atomic Model

  Q44. Let p₁ and p₂ be the momenta of photons corresponding to the first and second lines, respectively, of the Balmer series of hydrogen. If p₁/p₂ = α/β, which pair of values of α and β is correct?

  Options

  • Option A

    α = 27, β = 20

  • Option B

    α = 3, β = 16

  • Option C

    α = 5, β = 36

  • Option D

    α = 20, β = 27

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