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Day 109: JEE Mains Physics

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

  1. Question 1

    Wave Optics. This type asked 2 times: 4 Apr 2026 S1, 8 Apr 2026 S2. This one: 8 Apr 2026 S2 See all 2 of this type

    22
    A distant star is to be observed by a telescope whose objective lens has diameter aa, at an angular resolution of 3.0×10−73.0 \times 10^{- 7} radian. If the wavelength of light from the star reaching the telescope is 500 nm , the minimum diameter of the objective lens of the telescope is ____\_\_\_\_ cm. (Nearest integer)

  2. Question 2

    Electromagnetic Waves. This type asked 2 times: 24 Jan 2023, 6 Apr 2026 S2. This one: 24 Jan 2023 See all 2 of this type

    100
    The electric field and magnetic field components of an electromagnetic wave going through vacuum is described by
    Ex=E0sin⁡(kz−ωt)E_{x}=E_{0}\sin(kz - \omega t)
    By=Bosin⁡(kz−ωt)B_{y}=B_{o}\sin(kz - \omega t)
    Then the correct relation between E0E_{0} and B0B_{0} is given by

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  3. Question 3

    Electrostatics. This type asked 2 times: 29 Jun 2022, 6 Apr 2026 S2. This one: 6 Apr 2026 S2 See all 2 of this type

    12
    The electric potential as a function of x,yx,y is given by V=5(x2−y2)VV = 5\left( x^{2}-y^{2} \right)V. The electric field at a point (2,3)m(2,3)m is ____\_\_\_\_ V/m.

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  4. Question 4

    Kinetic Theory. This type asked 2 times: 2021 Paper 7, 6 Apr 2026 S2. This one: 6 Apr 2026 S2 See all 2 of this type

    10
    If 2 mole of an ideal monoatomic gas at temperature T , is mixed with 6 mole of another ideal monoatomic gas at temperature 2T then the temperature of mixture is :

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  5. Question 5

    Mechanical Properties of Fluids. This type asked 2 times: 2021 Paper 17, 6 Apr 2026 S2. This one: 6 Apr 2026 S2 See all 2 of this type

    9
    A cylindrical vessel of 40 cm radius is completely filled with water and its capacity is 528dm3(dm528dm^{3}(dm : decimeter). The vessel is placed on a solid block of exactly same height as vessel. If a small hole is made at 70 cm below the top of water level, then horizontal range of water falling on the ground in the beginning is ____\_\_\_\_ cm .

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