A hope and a solid cylinder of same mass and radius are made of a permanent magnetic material with their magnetic moment parallel to their respective axes. But the magnetic moment of hoop is twice of solid cylinder. They are placed in a uniform magnetic field in such a manner that their magnetic moments make a small angle with the field. If the oscillation periods if hoop and cylinder are Th and Tc respectively, then: (a) Th=0.5 Tc (b) Th=2 Tc (c) Th=1.5 Tc (d) Th=Tc

Question ID - 50258 :- A hope and a solid cylinder of same mass and radius are made of a permanent magnetic material with their magnetic moment parallel to their respective axes. But the magnetic moment of hoop is twice of solid cylinder. They are placed in a uniform magnetic field in such a manner that their magnetic moments make a small angle with the field. If the oscillation periods if hoop and cylinder are Th and Tc respectively, then: (a) Th=0.5 Tc (b) Th=2 Tc (c) Th=1.5 Tc (d) Th=Tc

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 The electric field of a plane polarized electromagnetic wave in free space at time t=0 is given by an expression (x, y) = 10 cos [(6x+8z)] The magnetic field  (x, z, t) is given by :(c is the velocity of light) (a) = (6+8)cos [(6x−8z+10ct)] (b) (6−8)cos[(6x+8z−10ct)] (c) (6+8)cos[(6x+8z−10ct)] (d) (6−8)cos[(6x+8z+10ct)]