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Day 552: JEE Mains Physics

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

  1. Question 1

    Kinetic Theory. Asked once: 2021 Paper 20

    6
    A balloon carries a total load of 185 kg185\text{ }kg at normal pressure and temperature of 27∘C27^{\circ}C. What load will the balloon carry on rising to a height at which the barometric pressure is 45 cm45\text{ }cm of HgHg and the temperature is −7∘C-7^{\circ}C. Assuming the volume constant?

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  2. Question 2

    Laws of Motion. Asked once: 24 Jan 2023

    19
    As per given figure, a weightless pulley PP is attached on a double inclined frictionless surface The tension in the string (massless) will be (if g=10 m/s2g = 10\text{ }m/s^{2} )

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  3. Question 3

    Mechanical Properties of Fluids. Asked once: 2021 Paper 5

    4
    The pressure acting on a submarine is 3×1053 \times10^{5} PaPa at a certain depth. If the depth is doubled, the percentage increase in the pressure acting on the submarine would be : (Assume that atmospheric pressure is 1×105 Pa1 \times10^{5}\text{ }Pa density of water is 103 kg m−3, g=10 ms−210^{3}\text{ }kg{\text{ }m}^{- 3},\text{ }g = 10{\text{ }ms}^{- 2} )

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  4. Question 4

    Motion in a Plane. Asked once: 1 Feb 2023

    110
    For a body projected at an angle with the horizontal from the ground, choose the correct statement.

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  5. Question 5

    Motion in a Straight Line. Asked once: 29 Jan 2023

    24
    A tennis ball is dropped on to the floor from a height of 9.8 m9.8\text{ }m. It rebounds to a height 5.0 m5.0\text{ }m. Ball comes in contact with the floor for 0.2 s0.2\text{ }s. The average acceleration during contact is ____\_\_\_\_ ms−2ms^{- 2} (Given g=10 ms−2g = 10{\text{ }ms}^{- 2} )