Day 39: JEE Mains Physics

Electrostatics. This type asked 4 times: 2021 Paper 19, 3 Apr 2025, 23 Jan 2026 S1, 24 Jan 2026 S2. This one: 24 Jan 2026 S2 See all 4 of this type

10

Three parallel plate capacitors each with area A and separation d are filled with two dielectric ( $k_{1}$ and $k_{2}$ ) in the following fashion. Which of the following is true? $\left( k_{1}>k_{2} \right)$

1. A.
   $C_{B} > C_{C} > C_{A}$
2. B.
   $C_{C} > C_{B} > C_{A}$
3. C.
   $C_{C} > C_{A} > C_{B}$
4. D.
   $C_{A} > C_{C} > C_{B}$

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Motion in a Plane. This type asked 4 times: 2021 Paper 14, 27 Jun 2022, 29 Jan 2025, 24 Jan 2026 S2. This one: 24 Jan 2026 S2 See all 4 of this type

5

In case of vertical circular motion of a particle by a thread of length r if the tension in the thread is zero at an angle $30^{\circ}$ shown in figure, the velocity at the bottom point (A) of the circular path is (g = gravitational acceleration)

1. A.
   $\sqrt{5gr}$
2. B.
   $\sqrt{\frac{7}{2}gr}$
3. C.
   $\sqrt{4gr}$
4. D.
   $\sqrt{\frac{5}{2}gr}$

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Electromagnetic Waves. This type asked 4 times: 2021 Paper 2, 1 Feb 2023, 8 Apr 2023, 24 Jan 2026 S1. This one: 24 Jan 2026 S1 See all 4 of this type

Wave Optics. This type asked 4 times: 29 Jan 2023, 31 Jan 2024, 23 Jan 2026 S2, 24 Jan 2026 S1. This one: 24 Jan 2026 S1 See all 4 of this type

Mechanical Properties of Fluids. This type asked 4 times: 2021 Paper 17, 28 Jun 2022, 3 Apr 2025, 23 Jan 2026 S2. This one: 23 Jan 2026 S2 See all 4 of this type