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Day 87: JEE Mains Physics

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

  1. Question 1

    Motion in a Straight Line. Asked 2 times: 26 Jun 2022*, 5 Apr 2026 S1 (* = numbers or wording changed that year) See all 2 times it was asked

    22
    From 18 m height above the ground a ball is dropped from rest. The height above the ground at which the magnitude of velocity equal to the magnitude of acceleration (in the same set of units) due to gravity is ____\_\_\_\_ m. (Take g=10 m/s2g = 10\text{ }m/s^{2} and neglect the air resistance)

  2. Question 2

    Moving Charges and Magnetism. Asked 2 times: 26 Jul 2022*, 5 Apr 2026 S1 (* = numbers or wording changed that year) See all 2 times it was asked

    24
    The charged particle moving in a uniform magnetic field of (3i^+2j^)T(3\widehat{i} + 2\widehat{j})T has an acceleration (4i^−x2j^)m/s2\left( 4\widehat{i} - \frac{x}{2}\widehat{j} \right)m/s^{2}. The value of xx is

  3. Question 3

    Electromagnetic Induction. Asked 2 times: 28 Jun 2022*, 2 Apr 2026 S1 (* = numbers or wording changed that year) See all 2 times it was asked

    13
    When a coil is placed in a time dependent magnetic field the power dissipated in it is P . The number of turns, area of the coil and radius of the coil wire are N , A and r respectively. For a second coils number of turns, area of the coil and radius of the coil wire are 2 N , 2A and 3 r respectively. When the first coil is replaced with second coil the power dissipated in it is 2αP\sqrt{2}\alpha P. The value of α\alpha is ____\_\_\_\_ .

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  4. Question 4

    Mechanical Properties of Solids. Asked 2 times: 31 Jan 2023*, 28 Jan 2026 S1 (* = numbers or wording changed that year) See all 2 times it was asked

    14
    Two wires AA and BB made of different materials of length 6.0 cm and 5.4 cm , respectively and area of cross sections 3.0×10−5 m23.0 \times10^{- 5}{\text{ }m}^{2} and 4.5×10−5 m24.5 \times10^{- 5}{\text{ }m}^{2}, respectively are stretched by the same magnitude under a given load. The ratio of the Young's modulus of AA to that of BB is x:3x:3. The value of xx is ____\_\_\_\_.

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  5. Question 5

    Thermal Properties of Matter. Asked 2 times: 30 Jan 2024*, 28 Jan 2026 S1 (* = numbers or wording changed that year) See all 2 times it was asked

    8
    Which of the following best represents the temperature versus heat supplied graph for water, in the range of −20∘C-20^{\circ}C to 120∘C120^{\circ}C ?

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