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Day 559: JEE Mains Physics

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

  1. Question 1

    System of Particles and Rotational Motion. Asked once: 11 Apr 2023

    26
    A solid sphere of mass 500 g500\text{ }g and radius 5 cm5\text{ }cm is rotated about one of its diameter with angular speed of 10rads−110rads^{- 1}. If the moment of inertia of the sphere about its tangent is x×10−2x \times10^{- 2} times its angular momentum about the diameter. Then the value of xx will be

  2. Question 2

    Thermodynamics. Asked once: 2021 Paper 19

    14
    A refrigerator consumes an average 35 W35\text{ }W power to operate between temperature −10∘C-10^{\circ}C to 25∘C25^{\circ}C. If there is no loss of energy then how much average heat per second does it transfer?

    Tap an option to check your answer.

  3. Question 3

    Units and Measurements. Asked once: 29 Jan 2023

    3
    Match List I with List II: Choose the correct answer from the options given below:

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  4. Question 4

    Work, Energy and Power. Asked once: 24 Jan 2023

    30
    A spherical body of mass 2 kg2\text{ }kg starting from rest acquires a kinetic energy of 10000 J10000\text{ }J at the end of 5th 5^{\text{th~}} second. The force acted on the body is ____\_\_\_\_ NN.

  5. Question 5

    Atoms. Asked once: 2021 Paper 2

    3
    An X-ray tube is operated at 1.24 million volt. The shortest wavelength of the produced photon will be:

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