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Day 316: JEE Mains Physics

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

  1. Question 1

    Electrostatics. Asked once: 2021 Paper 1 (same type asked 3 times) See all 3 of this type

    4
    Two equal capacitors are first connected in series and then in parallel. The ratio of the equivalent capacities in the two cases will be -

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  2. Question 2

    Mechanical Properties of Fluids. Asked once: 29 Jan 2024 (same type asked 3 times) See all 3 of this type

    3
    Given below are two statements: Statement I: If a capillary tube is immersed first in cold water and then in hot water, the height of capillary rise will be smaller in hot water. Statement II: If a capillary tube is immersed first in cold water and then in hot water, the height of capillary rise will be smaller in cold water. In the light of the above statements, choose the most appropriate from the options given below

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  3. Question 3

    Motion in a Plane. Asked once: 30 Jan 2023 (same type asked 3 times) See all 3 of this type

    113
    A stone tied to 180 cm180\text{ }cm long string at its end is making 28 revolutions in horizontal circle in every minute. The magnitude of acceleration of stone is 1936x ms−2\frac{1936}{x}{\text{ }ms}^{- 2}. The value of xx____ (Take π=227\pi =\frac{22}{7} )

  4. Question 4

    Waves. Asked once: 8 Apr 2023 (same type asked 3 times) See all 3 of this type

    112
    A guitar string of length 90 cm90\text{ }cm vibrates with a fundamental frequency of 120 Hz120\text{ }Hz. The length of the string producing a fundamental frequency of 180 Hz180\text{ }Hz will be____ cmcm.

  5. Question 5

    Alternating Current. Asked once: 2021 Paper 8 (same type asked 3 times) See all 3 of this type

    15
    Match List-I with List-II:
    List-IList-II
    (A) Phase difference between current and voltage in a purely resistive AC circuit(i) π2\frac{\pi}{2}; current leads voltage
    (B) Phase difference between current and voltage in a pure inductive AC circuit(ii) zero
    (C) Phase difference between current and voltage in a pure capacitive AC circuit(iii) π2\frac{\pi}{2}; current lags voltage
    (D) Phase difference between current and voltage in an LCR series circuit(iv) tan⁡−1(XC−XLR)\tan^{-1}\left( \frac{X_{C}-X_{L}}{R} \right)
    Choose the most appropriate answer from the options given below:

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