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Day 272: JEE Mains Physics

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

  1. Question 1

    Units and Measurements. Asked once: 25 Jul 2022 (same type asked 5 times) See all 5 of this type

    1
    If momentum [P]\lbrack P\rbrack, area [A]\lbrack A\rbrack and time [T]\lbrack T\rbrack are taken as fundamental quantities, then the dimensional formula for coefficient of viscosity is:

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  2. Question 2

    Wave Optics. Asked once: 4 Apr 2024 (same type asked 5 times) See all 5 of this type

    27
    Two wavelengths λ1\lambda_{1} and λ2\lambda_{2} are used in Young's double slit experiment λ1=450 nm\lambda_{1}= 450\text{ }nm and λ2=650 nm\lambda_{2}= 650\text{ }nm. The minimum order of fringe produced by λ2\lambda_{2} which overlaps with the fringe produced by λ1\lambda_{1} is nn. The value of nn is. ___

  3. Question 3

    Ray Optics. Asked once: 4 Apr 2025 (same type asked 5 times) See all 5 of this type

    23
    Distance between object and its image (magnified by −13- \frac{1}{3} ) is 30 cm . The focal length of the mirror used is (x4)cm\left( \frac{x}{4} \right)cm, where magnitude of value of xx is ____\_\_\_\_.

  4. Question 4

    Waves. Asked once: 8 Apr 2024 (same type asked 5 times) See all 5 of this type

    27
    A closed and an open organ pipe have same lengths. If the ratio of frequencies of their seventh overtones is (a−1a)\left( \frac{a - 1}{a} \right) then the value of aa is_____.

  5. Question 5

    Current Electricity. Asked once: 6 Apr 2023 (same type asked 5 times) See all 5 of this type

    111
    As shown in the figure, the voltmeter reads 2 V2\text{ }V across 5Ω5\Omega resistor. The resistance of the voltmeter is____ Ω\Omega.