PYQ Vault

Day 392: MHT-CET Physics

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

  1. Question 1

    Sound. Asked once: 2 May 2023 S1

    49
    An air column in a closed organ pipe vibrating in unison with a fork, produces second overtone. The vibrating air column has

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  2. Question 2

    Structure of Atoms and Nuclei. Asked once: 9 May 2024 S1

    7
    The ratio of wavelengths for transition of electrons from 2nd orbit to 1st orbit of Helium (He++\text{He}^{++}) & Lithium (Li+++\text{Li}^{+++}) is (Atomic number of Helium =2=2, Atomic number of Lithium =3=3)

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  3. Question 3

    Superposition of Waves. Asked once: 9 May 2024 S2

    5
    Stationary waves can be produced in

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  4. Question 4

    Thermal Properties of Matter. Asked once: 20 Apr 2025 S2

    14
    The following graph represents the radiant power versus wavelength of the black body. The area under the curve represents

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  5. Question 5

    Thermodynamics. Asked once: 14 May 2024 S2

    28
    An ideal refrigerator has freezer at a temperature of −13°C-13°C. The coefficient of performance of the engine is 5. The temperature of the air (to which heat is rejected) is

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