JEE Mains 2025 22 Jan Evening Shift physics questions with solutions

Showing 1–10 of 20 questions

• MCQmediumElectromagnetic wavedisplacement current and properties of electromagnetic wave

  The displacement current through a capacitor of plate area 16 cm² is 6 A at an instant. Assuming uniform electric field, find the displacement current corresponding to area 3.2 cm

  

  Options

  • Option A

    1.2 A

  • Option B

    1.6 A

  • Option C

    2.1 A

  • Option D

    0.5 A

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• MCQmediumGeometrical opticslens and combination lens,silvered lens

  An equiconvex lens of focal length f is cut into four parts as shown in the original question figure. The focal length of each part is:

  

  Options

  • Option A

    f

  • Option B

    2f

  • Option C

    f/2

  • Option D

    4f

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• MCQmediumFluid Mechanicsequation of continuity and bornullie theorem

  The radius of a tube decreases from 2R to R. An ideal liquid flows through it at the same level. If the speed at the wider end is 2 m/s, the speed v at the narrower end is:

  

  Options

  • Option A

    4 m/s

  • Option B

    1 m/s

  • Option C

    2 m/s

  • Option D

    8 m/s

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• MCQmediumRotational Motiontorque and rotational equilibrium

  A force $\vec{F}$=(î+2ĵ-3k̂) N acts at a point whose position vector is $\vec{r}$=(2î-3ĵ+7k̂) m. Find the torque about the origin.

  Options

  • Option A

    (+5î-12ĵ+7k̂) N·m

  • Option B

    (-5î-12ĵ+8k̂) N·m

  • Option C

    (-5î+13ĵ+7k̂) N·m

  • Option D

    (-5î+13ĵ-7k̂) N·m

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• MCQeasyCapacitorRC circuit

  In the resistor-capacitor network shown in the original question figure, find the steady-state current I supplied by source V. Every resistor has resistance R.

  

  Options

  • Option A

    V/(5R)

  • Option B

    5V/(3R)

  • Option C

    8V/(13R)

  • Option D

    3V/R

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• MCQmediumElectrostaticelectric dipole and dipole moment

  For an electric dipole, the electric field and potential at an axial point a distance r from its centre are E₀ and V₀. What are the electric field magnitude and potential at an equatorial point a distance 2r from the centre?

  Options

  • Option A

    E₀/16, 0

  • Option B

    E₀/4, 0

  • Option C

    E₀, V₀

  • Option D

    E₀/8, 0

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• MCQmediumElectromagnetic Inductionfaradays law and question based on it

  A conducting circular ring moves with constant velocity through a finite region of uniform magnetic field, as shown in the original question figure. Which induced-emf-versus-time graph is correct?

  Options

  • Option A

    Positive curved pulse while entering, zero when fully inside, then negative curved pulse while leaving

    
  • Option B

    Positive triangular pulse, zero, then negative triangular pulse

    
  • Option C

    A continuous cosine-like curve alternating from positive to negative

    
  • Option D

    Two V-shaped pulses of opposite sign

    

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• MCQmediumWave Opticsinterferece of light and huygen principle

  A glass slab of re$fractive$ index $\mu_{g}$=1.44 is coated with a thin film of re$fractive$ index $\mu_{f}$=2. Find the minimum film thickness for maximum transmission of normally incident green light of wavelength 5000 Å.

  Options

  • Option A

    0.500 μm

  • Option B

    0.250 μm

  • Option C

    0.125 μm

  • Option D

    1.00 μm

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• MCQmediumSimple Harmonic Motionangular shm and its time period

  Statement I: A pendulum is taken from Earth to a planet having four times Earth's mass and twice Earth's radius; its time period remains the same. Statement II: The time period of a simple pendulum depends only on the gravity of the planet.

  Options

  • Option A

    Statement I is true but Statement II is false

  • Option B

    Statement II is true but Statement I is false

  • Option C

    Both statements are false

  • Option D

    Both statements are true

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• MCQmediumsemiconductorlogic gate

  For the logic circuit and truth table shown in the original question figure, identify the gate G.

  

  Options

  • Option A

    AND

  • Option B

    NOR

  • Option C

    NAND

  • Option D

    OR

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