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Day 493: JEE Mains Physics

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

  1. Question 1

    Mechanical Properties of Fluids. Asked once: 31 Jan 2024

    16
    A small steel ball is dropped into a long cylinder containing glycerine. Which one of the following is the correct representation of the velocity time graph for the transit of the ball?

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  2. Question 2

    Mechanical Properties of Solids. Asked once: 28 Jul 2022

    113
    A string of area of cross-section 4 mm24{\text{ }mm}^{2} and length 0.5 m is connected with a rigid body of mass 2 kg2\text{ }kg. The body is rotated in a vertical circular path of radius 0.5 m0.5\text{ }m. The body acquires a speed of 5 m/s5\text{ }m/s at the bottom of the circular path. Strain produced in the string when the body is at the bottom of the circle is ____×10−5\_\_\_\_\times10^{- 5}. (Use Young's modulus 1011 N/m210^{11}\text{ }N/m^{2} and g=10 m/s2g = 10\text{ }m/s^{2} )

  3. Question 3

    Motion in a Plane. Asked once: 5 Apr 2024

    118
    The maximum height reached by a projectile is 64 m64\text{ }m. If the initial velocity is halved, the new maximum height of the projectile is ___ mm.

  4. Question 4

    Motion in a Straight Line. Asked once: 6 Apr 2024

    113
    A particle moves in a straight line so that its displacement xx at any time tt is given by x2=1+t2x^{2}= 1 +t^{2}. Its acceleration at any time tt is x−nx^{- n} where n=n =_______

  5. Question 5

    Moving Charges and Magnetism. Asked once: 31 Jan 2024

    5
    A rigid wire consists of a semicircular portion of radius RR and two straight sections. The wire is partially immerged in a perpendicular magnetic field B=B0k^B =B_{0}\widehat{k} as shown in figure. The magnetic force on the wire if it has a current ii is:

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