JEE Mains 2024 08 Apr Morning Shift physics questions with solutions

Showing 1–10 of 30 questions

• NumericmediumElectromagnetic Inductionfaradays law and question based on it

  A square loop PQRS having 10 turns, area 3.6 × 10⁻³ m² and resistance 100 Ω is slowly and uniformly being pulled out of a uniform magnetic field of magnitude B = 0.5 T as shown. Work done in pulling the loop out of the field in 1.0 s is _________ × 10⁻⁶ J.

  

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• MCQeasyMagnetism and matterproperties of magnetic substance

  Paramagnetic substances:

  A. align themselves along the directions of external magnetic field.
  B. attract strongly towards external magnetic field.
  C. has susceptibility little more than zero.
  D. move from a region of strong magnetic field to weak magnetic field.

  Choose the most appropriate answer from the options given below:

  Options

  • Option A

    A, B, C, D

  • Option B

    B, D Only

  • Option C

    A, B, C Only

  • Option D

    A, C Only

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• MCQeasyFluid Mechanicsequation of continuity and bornullie theorem

  Correct Bernoulli's equation is (symbols have their usual meaning) :

  Options

  • Option A

    P + mgh + ½mv² = constant

  • Option B

    P + ρgh + ½ρv² = constant

  • Option C

    P + ρgh + ρv² = constant

  • Option D

    P + ½ρgh + ½ρv² = constant

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• MCQmediumUnit dimension and errorvernier callipers and screw gauge

  The diameter of a sphere is measured using a vernier caliper whose 9 divisions of main scale are equal to 10 divisions of vernier scale. The shortest division on the main scale is equal to 1 mm. The main scale reading is 2 cm and second division of vernier scale coincides with a division on main scale. If mass of the sphere is 8.635 g, the density of the sphere is:

  Options

  • Option A

    2.5 g/cm³

  • Option B

    1.7 g/cm³

  • Option C

    2.2 g/cm³

  • Option D

    2.0 g/cm³

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• NumericmediumMathematical tools and vectorVectors

  Three vectors OP, OQ and OR each of magnitude A are acting as shown in figure. The resultant of the three vectors is A√x. The value of x is _____.

  

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• MCQeasyCenter of maas , Momentum and Collisionmomentum and conservation of momentum

  Three bodies A, B and C have equal kinetic energies and their masses are 400 g, 1.2 kg and 1.6 kg respectively. The ratio of their linear momenta is :

  Options

  • Option A

    1 : √3 : 2

  • Option B

    1 : √3 : √2

  • Option C

    √2 : √3 : 1

  • Option D

    √3 : √2 : 1

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• NumericmediumAtomic Structure and X-raysatomic structre and bohr atomic model

  In an alpha particle scattering experiment distance of closest approach for the α particle is 4.5 × 10⁻¹⁴ m. If target nucleus has atomic number 80, then maximum velocity of α-particle is _______ × 10⁵ m/s approximately. (1/(4πε₀) = 9 × 10⁹ SI unit, mass of α particle = 6.72 × 10⁻²⁷ kg)

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• MCQmediumPhotoelectric effect and dual nature of matterquestion based on photoelectric effect

  Average force exerted on a non-reflecting surface at normal incidence is 2.4 × 10⁻⁴ N. If 360 W/cm² is the light energy flux during span of 1 hour 30 minutes. Then the area of the surface is:

  Options

  • Option A

    0.2 m²

  • Option B

    0.02 m²

  • Option C

    20 m²

  • Option D

    0.1 m²

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• MCQeasyAC Circuitsseries combination of ac circuit and L-C-R circuit

  A LCR circuit is at resonance for a capacitor C, inductance L and resistance R. Now the value of resistance is halved keeping all other parameters same. The current amplitude at resonance will be now:

  Options

  • Option A

    Zero

  • Option B

    double

  • Option C

    same

  • Option D

    halved

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• NumericeasyCurrent electricityElectric Current, Drift Velocity & Resistance

  Resistance of a wire at 0°C, 100°C and t°C is found to be 10 Ω, 10.2 Ω and 10.95 Ω respectively. The temperature t in Kelvin scale is______.

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