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JEE Advanced Mi...

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  • Question 1
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    A point charge Q is moving in a circular orbit of radius R in the x-y plane with an angular velocity ω. This can be considered as equivalent to a loop carrying a steady current  A uniform magnetic field along the positive z-axis is now switched on, which increases at a constant rate from 0 to B in one second. Assume that the radius of the orbit remains constant. The application of the magnetic field induces an emf in the orbit. The induced emf is defined as the work done by an induced electric field in moving a unit positive charge around a closed loop. It is known that, for an orbiting charge, the magnetic dipole moment is proportional to the angular momentum with a proportionality constant .

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    The magnitude of the induced electric field in the orbit at any instant of time during the time interval of the magnetic field change is

  • Question 2
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    The mass of a nucleus  is less than the sum of the masses of (A - Z) number of neutrons and Z number of protons in the nucleus. The energy equivalent to the corresponding mass difference is known as the binding energy of the nucleus. A heavy nucleus of mass M can break into two light nuclei of masses mand m2 only if (m1 + m2) < m.="" also,="" two="" light="" nuclei="" of="" masses="" />3 and m4 can undergo complete fusing and form a heavy nucleus of mass M' only if (m3 + m4) > M'. The masses of some neutral atoms are given in the table below:

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    Which of the following statements is correct?

  • Question 3
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    Out of the following pairs one which does not have identical dimensions is

  • Question 4
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    Two aliphatic aldehydes P and Q react in the presence of aqueous K2CO3 to give compound R, which upon treatment with HCN provides compound S. On acidification and heating, S gives the product shown below.

  • Question 5
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    The hydrogen-like species Li2+ is in a spherically symmetric state S1 with one radial node. Upon absorbing light, the ion undergoes transition to a state S2. The state S2 has one radial node and its energy is equal to the ground state energy of the hydrogen atom.

    The orbital S2 and the energy of the state S1 in units of the hydrogen atom ground state energy respectively are;

  • Question 6
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    The correct set of the products obtained in the following reactions

  • Question 7
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    Let PQ be a focal chord of the parabola y2 = 4ax. The tangents to the parabola at P and Q meet at a point lying on the line y = 2x + a, a > 0.

    If chord PQ subtends an angle θ at the vertex of y2 = 4ax, then tanθ equals

  • Question 8
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    Let f : [0, 1] → R (the set of all real numbers) be a function. Suppose the function f is twice differentiable, f(0) = f(1) = 0 and satisfies f(x) - 12f'(x) + f(x) ≥ ex, x ∈ [0,1].

    If the function e-x f(x) assumes its minimum in the interval [0, 1] at x = 1/4, which of the following is true?

  • Question 9
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  • Question 10
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    For x ∈(0, π), the equation sinx + 2sin2x − sin3x = 3 has

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