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Day 428: JEE Mains Physics

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

  1. Question 1

    Wave Optics. Asked once: 15 Apr 2023 (same type asked 10 times) See all 10 of this type

    19
    A single slit of width aa is illuminated by a monochromatic light of wavelength 600 nm600\text{ }nm. The value of ' aa ' for which first minimum appears at θ=30∘\theta =30^{\circ} on the screen will be:

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  2. Question 2

    Units and Measurements. Asked once: 12 Apr 2023 (same type asked 20 times) See all 20 of this type

    9
    Match List I with List II
    List IList II
    (A) Spring constant(I) (T−1)\left( T^{-1} \right)
    (B) Angular speed(II) (MT−2)\left( MT^{-2} \right)
    (C) Angular momentum(III) (ML2)\left( ML^{2} \right)
    (D) Moment of Inertia(IV) (ML2T−1)\left( ML^{2}T^{-1} \right)
    Choose the correct answer from the options given below:

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  3. Question 3

    Gravitation. Asked once: 2021 Paper 8 (same type asked 14 times) See all 14 of this type

    6
    A geostationary satellite is orbiting around an arbitrary planet ' PP ' at a height of 11R11R above the surface of ' PP ', RR being the radius of ' PP '. The time period of another satellite in hours at a height of 2R2R from the surface of ' PP ' is: ('P' rotates once about its axis in 24 hours.)

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  4. Question 4

    Electrostatics. Asked once: 26 Jun 2022 (same type asked 12 times) See all 12 of this type

    10
    Two capacitors having capacitance C1C_{1} and C2C_{2} respectively are connected as shown in figure. Initially, capacitor C1C_{1} is charged to a potential difference VV volt by a battery. The battery is then removed and the charged capacitor C1C_{1} is now connected to uncharged capacitor C2C_{2} by closing the switch S. The amount of charge on the capacitor C2C_{2}, after equilibrium is:

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  5. Question 5

    Electromagnetic Waves. Asked once: 2021 Paper 5 (same type asked 11 times) See all 11 of this type

    6
    A plane electromagnetic wave of frequency 500MHz500MHz is travelling in vacuum along yy-direction. At a particular point in space and time, B→=8.0×10−8z^T\overrightarrow{B}= 8.0 \times10^{- 8}\widehat{z}T. The value of electric field at this point is : (speed of light =3×108 ms−1= 3 \times10^{8}{\text{ }ms}^{- 1} ) x^,y^,z^\widehat{x},\widehat{y},\widehat{z} are unit vectors along x,yx,y and zz direction.

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