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A thin non conducting disc of mass M = 2kg, charge Q = 2x10–2 C and radius R = 1/6m is placed on a frictionless horizontal plane with its centre at the origin of the coordinate system. A non uniform, radial magnetic field  exists in space, where B0 = 10T and  is a unit vector in the radially outward direction. The disc is set in motion with an angular velocity w = x*102 rad/sec, about an axis passing through its centre and perpendicular to its plane, as shown in the figure. At what value of x, the disc will lift off from the surface.
  • a)
    a
  • b)
    b
  • c)
    c
  • d)
    d
Correct answer is '9'. Can you explain this answer?
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A thin non conducting disc of mass M = 2kg, charge Q = 2x10–2C a...
The force an any small part of the disc is in the vertically upward direction
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A thin non conducting disc of mass M = 2kg, charge Q = 2x10–2C and radius R = 1/6mis placed on a frictionless horizontal plane with its centre at the origin of the coordinate system. A non uniform, radial magnetic fieldexists in space, where B0= 10T andis a unit vector in the radially outward direction. The disc is set in motion with an angular velocity w = x*102rad/sec, about an axis passing through its centre and perpendicular to its plane, as shown in the figure. At what value of x, the disc will lift off from the surface.a)ab)bc)cd)dCorrect answer is '9'. Can you explain this answer?
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A thin non conducting disc of mass M = 2kg, charge Q = 2x10–2C and radius R = 1/6mis placed on a frictionless horizontal plane with its centre at the origin of the coordinate system. A non uniform, radial magnetic fieldexists in space, where B0= 10T andis a unit vector in the radially outward direction. The disc is set in motion with an angular velocity w = x*102rad/sec, about an axis passing through its centre and perpendicular to its plane, as shown in the figure. At what value of x, the disc will lift off from the surface.a)ab)bc)cd)dCorrect answer is '9'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about A thin non conducting disc of mass M = 2kg, charge Q = 2x10–2C and radius R = 1/6mis placed on a frictionless horizontal plane with its centre at the origin of the coordinate system. A non uniform, radial magnetic fieldexists in space, where B0= 10T andis a unit vector in the radially outward direction. The disc is set in motion with an angular velocity w = x*102rad/sec, about an axis passing through its centre and perpendicular to its plane, as shown in the figure. At what value of x, the disc will lift off from the surface.a)ab)bc)cd)dCorrect answer is '9'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A thin non conducting disc of mass M = 2kg, charge Q = 2x10–2C and radius R = 1/6mis placed on a frictionless horizontal plane with its centre at the origin of the coordinate system. A non uniform, radial magnetic fieldexists in space, where B0= 10T andis a unit vector in the radially outward direction. The disc is set in motion with an angular velocity w = x*102rad/sec, about an axis passing through its centre and perpendicular to its plane, as shown in the figure. At what value of x, the disc will lift off from the surface.a)ab)bc)cd)dCorrect answer is '9'. Can you explain this answer?.
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