- A$2\text{h}$
- B$\frac{\text{h}}{2}$
- C$\frac{\text{h}}{2\pi}$
- D$\frac{\text{h}}{4\pi}$
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A charge of Q coulomb is placed on a solid piece of metal of irregular shape. The charge will distribute itself
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(a) Uniformly in the metal object |
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(b) Uniformly on the surface of the object |
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(c) Such that the potential energy of the system is minimised |
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(d) Such that the total heat loss is minimised |
A copper ring is held horizontally and a bar magnet is dropped through the ring with its length along the axis of the ring. The acceleration of the falling magnet while it is passing through the ring is
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(a) Equal to that due to gravity |
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(b) Less than that due to gravity |
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(c) More than that due to gravity |
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(d) Depends on the diameter of the ring and the length of the magnet |

In which of the following remote sensing technique is not used
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(a) Forest density |
(b) Pollution |
(c) Wetland mapping |
(d) Medical treatment |
Assertion : Torque on the coil is the maximum, when coil is suspended in a radial magnetic field.
Reason : The torque tends to rotate the coil on its own axis.
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(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
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(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
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(c) If assertion is true but reason is false. |
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(d) If the assertion and reason both are false. |