JEE Mains 2026 8 April Evening Shift physics questions with solutions

Showing 1–10 of 25 questions

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

  Consider the dimensional relation in which H equals x raised to power p, multiplied by ε raised to power q, multiplied by E raised to power r, and divided by t raised to power s. Here ε is permittivity, E is electric field, x is distance and t is time. The source paper states H as magnetic field, but its own note says the listed answer is obtained only when H is interpreted as magnetic-field intensity. Under that intended interpretation, what are p, q, r and s, respectively?

  Options

  • Option A

    1, 1, 1, 1

  • Option B

    -1, 1, 2, 1

  • Option C

    1, -1, -2, 1

  • Option D

    -1, -2, -2, 1

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• IntegermediumCapacitorCapacitors with Dielectrics

  A parallel-plate capacitor has plate separation 0.885 mm. When an insulating material fills the gap, the capacitance is 1 μF. The material has resistivity 1×10¹³ Ω·m, and the measured resistance between the plates is 17.7×10¹⁴ Ω. If the relative permittivity is α×10⁷, find α. Take ε₀ = 8.85×10⁻¹² F·m⁻¹.

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• IntegermediumMagnetic effect of currentMotion of Charged Particles in a Magnetic Field

  A particle of mass 5 mg and charge 5π×10⁻⁶ C moves with velocity v = (3î+2k̂)×10⁻² m·s⁻¹ in a uniform magnetic field B = 0.1k̂ T. The particle follows a helical path. How far does it move in the +k̂ direction while completing 5 revolutions? Give the answer in metres.

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• IntegermediumCapacitorRC Circuits: Charging & Discharging

  In the resistor-capacitor network shown in the source figure, the battery emf is 12 V and the capacitor is 100 μF. After steady state is reached, what charge is stored on the capacitor, in μC?

  

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• MCQmediumPhotoelectric effect and dual naturePhotoelectric Effect & Einstein's Equation

  For a given photosensitive material, K₁ and K₂ are the maximum kinetic energies of photoelectrons produced by light of wavelengths λ₁ and λ₂, respectively. If λ₁ = 2λ₂, which expression gives the work function φ of the material?

  Options

  • Option A

    K₂+2K₁

  • Option B

    2K₂-K₁

  • Option C

    K₁-2K₂

  • Option D

    K₂-2K₁

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• MCQeasyFluid MechanicsEquation of Continuity and Bernoulli's Principle

  A liquid of density 600 kg·m⁻³ flows steadily through a horizontal tube of varying cross-section. At point A, the cross-sectional area is 1.0 cm² and the liquid speed is 10 cm·s⁻¹. At point B, the cross-sectional area is 20 mm². What is the pressure difference P(A)-P(B)?

  Options

  • Option A

    18 Pa

  • Option B

    144 Pa

  • Option C

    36 Pa

  • Option D

    72 Pa

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• MCQeasyProperties of solid and fluidViscosity, Stokes' Law and Terminal Velocity

  A spherical liquid drop of radius R falls through a gas of viscosity η with terminal speed v₁. The drop is then broken into 64 identical droplets, and each smaller droplet falls through the same gas with terminal speed v₂. Neglecting changes in density and using Stokes' law, what is v₁ ÷ v₂?

  Options

  • Option A

    4

  • Option B

    0.25

  • Option C

    32

  • Option D

    16

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• MCQmediumKinematics part-2 Projectile MotionMotion in 2-D and ground to ground projectile

  Two identical projectiles are launched with the same speed at two different angles and have the same horizontal range R. Their times of flight are 5 s and 10 s. Taking g = 10 m·s⁻², what is R?

  Options

  • Option A

    250 m

  • Option B

    25 m

  • Option C

    500 m

  • Option D

    125 m

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• MCQmediumElectrostaticElectric Charge & Coulomb’s Law

  Two point charges q₁ = +3 μC and q₂ = -4 μC are located at position vectors r₁ = (2î+3ĵ+3k̂) m and r₂ = (î+ĵ+k̂) m, respectively. Taking 1 ÷ (4πε₀) = 9×10⁹ SI units, what is the force on q₂?

  Options

  • Option A

    (12î+24ĵ+24k̂)×10⁻³ N

  • Option B

    (4î+8ĵ+8k̂)×10⁻³ N

  • Option C

    (3î+6ĵ+6k̂)×10⁻³ N

  • Option D

    (-4î-8ĵ-8k̂)×10⁻³ N

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• MCQeasySimple Harmonic MotionTime Period of Linear Simple Harmonic Motion

  A mass m is suspended from a uniform spring and oscillates with frequency ν₁. The same spring is cut into two equal halves, and the same mass is suspended from one half. If the new frequency is ν₂, what is ν₂ /ν₁?

  Options

  • Option A

    1

  • Option B

    2

  • Option C

    √2

  • Option D

    √3

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