10 April 2023 physics questions with solutions

Showing 1–10 of 60 questions

• IntegermediumCircular Motion

  A radioactive nuclide has decay constant 1.5 × 10⁻⁵ s⁻¹ and molar mass 60 g mol⁻¹. Take N(A) = 6 × 10²³ mol⁻¹. The activity of 1.0 μg of the substance is ______ × 10¹⁰ Bq.

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  JEE Mains10 April 2023Shift 1Morning Shift

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• MCQeasyCircular Motion

  Given below are two statements: Statement I: Pressure in a reservoir of water is the same at all points at the same horizontal level. Statement II: Pressure applied to enclosed water is transmitted equally in all directions. Choose the correct answer.

  Options

  • Option A

    Both Statement I and Statement II are false

  • Option B

    Both Statement I and Statement II are true

  • Option C

    Statement I is true but Statement II is false

  • Option D

    Statement I is false but Statement II is true

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  JEE Mains10 April 2023Shift 1Morning Shift

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• MCQmediumCircular Motion

  A physical quantity is given by P = a²b³/(c√d). The percentage errors in a, b, c and d are 1%, 2%, 3% and 4% respectively. The percentage error in P is:

  Options

  • Option A

    14%

  • Option B

    13%

  • Option C

    16%

  • Option D

    12%

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  JEE Mains10 April 2023Shift 1Morning Shift

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• IntegereasyCircular Motion

  A piston of cross-sectional area 2.0 cm² pushes liquid through a tube whose outlet area is 10 mm². If the piston speed is 4 cm s⁻¹, the outgoing fluid speed is ______ cm s⁻¹. Image

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  JEE Mains10 April 2023Shift 2Evening Shift

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• MCQmediumCircular Motion

  The stopping-potential versus frequency graph for a metal is shown. The work function of the metal is: Image

  Options

  • Option A

    2.07 eV

  • Option B

    18.6 eV

  • Option C

    2.98 eV

  • Option D

    1.36 eV

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  JEE Mains10 April 2023Shift 2Evening Shift

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• MCQeasyCircular Motion

  Young's moduli of wires A and B are in the ratio Y(A): Y(B) = 1:4 and their cross-sectional areas are in the ratio A(A): A(B) = 1:3. Equal loads are applied and their lengths are equal. The ratio of elongations ΔL(A):ΔL(B) is:

  Options

  • Option A

    12 : 1

  • Option B

    1 : 36

  • Option C

    1 : 12

  • Option D

    36 : 1

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  JEE Mains10 April 2023Shift 2Evening Shift

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• MatcheasyCircular Motion

  Match List I with List II:

  List 1

  1. 3 translational degrees of freedom

  2. 3 translational and 2 rotational degrees of freedom

  3. 3 translational, 2 rotational and 1 vibrational degree of freedom

  4. 3 translational, 3 rotational and more than one vibrational degree of freedom

  List 2

  1. I. Monoatomic gases

  2. II. Polyatomic gases

  3. III. Rigid diatomic gases

  4. IV. Non-rigid diatomic gases

  Options

  • Option A

    A-I, B-III, C-IV, D-II

  • Option B

    A-I, B-IV, C-III, D-II

  • Option C

    A-IV, B-II, C-I, D-III

  • Option D

    A-IV, B-III, C-II, D-I

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  JEE Mains10 April 2023Shift 1Morning Shift

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• SubjectivemediumCircular Motion

  Unpolarised light of intensity 32 W m⁻² passes through three polaroids. The pass axis of the last polaroid is perpendicular to that of the first. If the emerging intensity is 3 W m⁻², find the angle between the pass axes of the first two polaroids. Image

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  JEE Mains10 April 2023Shift 1Morning Shift

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• MCQeasyCircular Motion

  In a metallic conductor under an applied electric field, free electrons:

  Options

  • Option A

    move with uniform velocity from lower to higher potential

  • Option B

    move in curved/randomly interrupted paths with a net drift from lower to higher potential

  • Option C

    move in straight-line paths in the same direction

  • Option D

    drift from higher potential to lower potential

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  JEE Mains10 April 2023Shift 2Evening Shift

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• MCQeasyCircular Motion

  The de Broglie wavelength of a molecule in a gas at 300 K is λ₁. If the temperature is increased to 600 K, the de Broglie wavelength becomes:

  Options

  • Option A

    2λ₁

  • Option B

    λ₁/√2

  • Option C

    √2λ₁

  • Option D

    λ₁/2

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