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Day 24: JEE Mains Physics

5 questions. Try each one first, then open its answer.

  1. Question 1

    Electromagnetic Waves. This type asked 5 times: 25 Jan 2023, 13 Apr 2023, 29 Jan 2024, 30 Jan 2024, 23 Jan 2026 S1. This one: 23 Jan 2026 S1 See all 5 of this type

    3
    Match List-I with List-II.
    List-I (Relation)List-II (Law)
    (A) ∮E→⋅dl→=−ddt∮B→⋅da→\oint \overrightarrow{E} \cdot \overrightarrow{dl} = - \frac{d}{dt}\oint \overrightarrow{B} \cdot \overrightarrow{da}(I) Ampere's circuital law
    (B) ∮B→⋅dl→=μ0(I+ϵ0dϕEdt)\oint \overrightarrow{B} \cdot \overrightarrow{dl} = \mu_{0}\left( I + \epsilon_{0}\frac{d\phi_{E}}{dt} \right)(II) Faraday's laws of electromagnetic induction
    (C) ∮E→⋅da→=1ϵ0∫ρdv\oint \overrightarrow{E} \cdot \overrightarrow{da} = \frac{1}{\epsilon_{0}}\int\rho dv(III) Ampere-Maxwell law
    (D) ∮B→⋅dl→=μ0I\oint \overrightarrow{B} \cdot \overrightarrow{dl} = \mu_{0}I(IV) Gauss's law of electrostatics
    Choose the correct answer from the options given below :

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  2. Question 2

    Electrostatics. This type asked 5 times: 2021 Paper 4, 29 Jan 2023, 4 Apr 2024, 22 Jan 2025, 23 Jan 2026 S1. This one: 23 Jan 2026 S1 See all 5 of this type

    15
    Two point charges 2 q and q are placed at vertex A and centre of face CDEF of the cube as shown in figure. The electric flux passing through the cube is :

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  3. Question 3

    Wave Optics. This type asked 5 times: 29 Jun 2022, 28 Jul 2022, 8 Apr 2023, 4 Apr 2025, 23 Jan 2026 S1. This one: 23 Jan 2026 S1 See all 5 of this type

    24
    In two separate Young's double-slit experimental set-ups, two monochromatic light sources of different wavelengths are used to get fringes of equal width. The ratios of the slit separations and that of the wavelengths of light used are 2:12:1 and 1:21:2 respectively. The corresponding ratio of the distances between the slits and the respective screens ( D1/D2D_{1}/D_{2} ) is ____\_\_\_\_.

  4. Question 4

    Dual Nature of Radiation and Matter. This type asked 5 times: 13 Apr 2023, 27 Jan 2024, 30 Jan 2024, 3 Apr 2025, 22 Jan 2026 S2. This one: 22 Jan 2026 S2 See all 5 of this type

    19
    Light is incident on a metallic plate having work function 110×10−20 J110 \times 10^{- 20}\text{ }J. If the produced photoelectrons have zero kinetic energy then the angular frequency of the incident light is ____\_\_\_\_ rad/srad/s. (h=6.63×10−34 J.s)\left( h = 6.63 \times 10^{- 34}\text{ }J.s \right)

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  5. Question 5

    Electrostatics. This type asked 5 times: 2021 Paper 26, 25 Jun 2022, 26 Jun 2022, 12 Apr 2023, 22 Jan 2026 S2. This one: 22 Jan 2026 S2 See all 5 of this type

    5
    Three small identical bubbles of water having same charge on each coalesce to form a bigger bubble. Then the ratio of the potentials on one initial bubble and that on the resultant bigger bubble is :

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