PYQ Vault
EbooksTutor

Day 13: JEE Mains Physics

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

  1. Question 1

    Semiconductor Electronics. This type asked 6 times: 2021 Paper 21, 29 Jul 2022, 10 Apr 2023, 1 Feb 2024, 24 Jan 2026 S1, 4 Apr 2026 S2. This one: 4 Apr 2026 S2 See all 6 of this type

    21
    A diode has Zener voltage of 10 V and maximum power dissipation of 0.5 W , then the minimum resistance to be used in series with this diode for safety when it is connected to a 25 V power supply is ____\_\_\_\_ Ω\Omega.

  2. Question 2

    Wave Optics. This type asked 6 times: 29 Jan 2023, 31 Jan 2023, 10 Apr 2023, 27 Jan 2024, 4 Apr 2025, 4 Apr 2026 S2. This one: 4 Apr 2026 S2 See all 6 of this type

    17
    An unpolarized light of certain intensity passes through a combination of two polarizers whose transmission axes are at 30∘30^{\circ} and 90∘90^{\circ}, respectively, with respect to the horizontal axis. A third polarizer with its transmission axis at 60∘60^{\circ} with the horizontal axis is placed between the two existing polarizers. The ratio of the output intensities with and without the third polarizer is ____\_\_\_\_.

    Tap an option to check your answer.

  3. Question 3

    Mechanical Properties of Fluids. This type asked 6 times: 29 Jan 2023, 11 Apr 2023, 4 Apr 2024, 24 Jan 2026 S2, 2 Apr 2026 S2, 4 Apr 2026 S1. This one: 4 Apr 2026 S1 See all 6 of this type

    22
    The surface tension of a soap solution is 3.5×10−2 N/m3.5 \times 10^{- 2}\text{ }N/m. The work required to increase the radius of a soap bubble from 1 cm to 2 cm is α×10−6 J\alpha \times 10^{- 6}\text{ }J. The value of α\alpha is ____\_\_\_\_ . (π=22/7)(\pi = 22/7)

  4. Question 4

    Atoms. This type asked 6 times: 27 Jun 2022, 1 Feb 2023, 10 Apr 2023, 4 Apr 2024, 21 Jan 2026 S2, 2 Apr 2026 S1. This one: 2 Apr 2026 S1 See all 6 of this type

    19
    Angular momentum of an electron in a hydrogen atom is 3 hπ\frac{3\text{ }h}{\pi}, then the energy of the electron is ____\_\_\_\_ eV .

    Tap an option to check your answer.

  5. Question 5

    Dual Nature of Radiation and Matter. This type asked 6 times: 26 Jul 2022, 31 Jan 2023, 29 Jan 2024, 1 Feb 2024, 24 Jan 2025, 28 Jan 2026 S2. This one: 28 Jan 2026 S2 See all 6 of this type

    11
    Number of photons of equal energy emitted per second by a 6 mW laser source operating at 663 nm is ____\_\_\_\_ . (Given : h=6.63×10−34h = 6.63 \times10^{- 34} J.s and c=3×108 m/sc = 3 \times10^{8}\text{ }m/s )

    Tap an option to check your answer.