JEE Mains 2025 4 April Morning Shift physics questions with solutions

Showing 1–10 of 25 questions

• MCQeasyAC Circuitsavg value and rms value of ac

  An alternating current is represented by i = 100√2 sin(100πt) A. The RMS current and frequency are:

  Options

  • Option A

    100 A, 50 Hz

  • Option B

    100/√2 A, 100 Hz

  • Option C

    50√2 A, 50 Hz

  • Option D

    100√2 A, 100 Hz

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• MCQmediumGeometrical opticsspherical mirror

  When an object is placed 40 cm from a spherical mirror, an image with magnification +1/2 is formed. To obtain an image with magnification +1/3, the object should be moved:

  Options

  • Option A

    80 cm away from the mirror

  • Option B

    40 cm away from the mirror

  • Option C

    20 cm towards the mirror

  • Option D

    20 cm away from the mirror

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• IntegereasyCapacitorequivalent capacitance of circuit

  Four capacitors, each of capacitance 16 μF, are connected as shown in the original figure. Find the equivalent capacitance between points A and B in μF.

  

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• MCQmediumProperties of solid and fluidproperties of fluid and surface tension

  Two liquids A and B have contact angles $\theta_{A}$and $\theta_{B}$ in a capillary tube. If K = cos$\theta_{A}$/cos$\theta_{B}$, identify the correct statement.

  Options

  • Option A

    If K is negative, both liquids A and B have concave meniscus

  • Option B

    If K is zero, liquid A has convex meniscus and liquid B has concave meniscus

  • Option C

    If K is negative, liquid A has concave meniscus and liquid B has convex meniscus

  • Option D

    If K is negative, both liquids A and B have convex meniscus

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• MCQeasyPhotoelectric effect and dual nature of matterquestion based on photoelectric effect

  Assertion (A): In the photoelectric effect, increasing the intensity of incident light increases the stopping potential. Reason (R): Increasing the intensity of light increases the rate of emission of photoelectrons, provided the incident frequency is greater than the threshold frequency. Choose the correct answer.

  Options

  • Option A

    A is true but R is false

  • Option B

    Both A and R are true but R is NOT the correct explanation of A

  • Option C

    Both A and R are true and R is the correct explanation of A

  • Option D

    A is false but R is true

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• MCQeasyUnit dimension and errorDimension and its application

  In an electromagnetic system, the ratio of electric flux to magnetic flux has dimensions MᴾLᑫTᴿAˢ. The values of Q and R are:

  Options

  • Option A

    (3, -5)

  • Option B

    (1, -1)

  • Option C

    (-2, 2)

  • Option D

    (-2, 1)

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• MCQmediumRotational Motiontorque and rotational equilibrium

  Which of the following are correct expressions for torque acting on a body? A. τ = r×L. B. τ = d(r×p)/dt. C. τ = r×(dp/dt). D. τ = Iα. E. τ = r×F. Choose the correct set.

  Options

  • Option A

    A, B, D and E only

  • Option B

    B, D and E only

  • Option C

    C and D only

  • Option D

    B, C, D and E only

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• MCQmediumElectrostaticElectric field intensity

  Two identical infinite positively charged sheets and a positively charged spherical body are arranged as shown in the original figure. Which relation between the electric fields at points A, B, C and D is correct?

  

  Options

  • Option A

    EA > EB; EC = ED

  • Option B

    EC ≠ ED; EA > EB

  • Option C

    |EA| = |EB|; EC > ED

  • Option D

    EA = EB; EC = ED

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• MCQmediumNewtons law of motion and Frictionequilibrium problem and newton first law

  A body of mass m is suspended by two strings making angles θ₁ and θ₂ with the horizontal ceiling. The corresponding tensions are T₁ and T₂, and T₁ = √3 T₂. Which option is correct?

  Options

  • Option A

    θ₁ = 60°, θ₂ = 30°, with T₂ = mg/2

  • Option B

    θ₁ = 30°, θ₂ = 60°, with T₂ = 4mg/5

  • Option C

    θ₁ = 30°, θ₂ = 60°, with T₂ = 3mg/4

  • Option D

    θ₁ = 45°, θ₂ = 45°, with T₂ = 3mg/4

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• NumericmediumRotational Motionrolling on inclined surface

  A circular ring and a solid sphere of the same radius roll from rest without slipping down the same inclined plane through the same vertical height. If the ratio of their speeds at the bottom is √(x/5), find x, rounded to the nearest integer as required for the Numerical Value section.

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