An infinitely long cylinder is kept parallel to an uniform magnetic field B directed along positive z axis. The direction of induced current as seen from the z axis will be
|
(a) Clockwise of the +ve z axis |
(b) Anticlockwise of the +ve z axis |
|
(c) Zero |
(d) Along the magnetic field |
(c) Zero
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Magnetic effect of current was discovered by
|
(a) Faraday |
(b) Oersted |
(c) Ampere |
(d) Bohr |
A radioactive substance has a half-life of 1 year. The fraction of this material, that would remain after 5 years will be
|
(a) |
(b) |
(c) |
(d) |
In human eye the focussing is done by
|
(a) To and fro movement of eye lens |
|
(b) To and fro movement of the retina |
|
(c) Change in the convexity of the lens surface |
|
(d) Change in the refractive index of the eye fluids |
Following is the relation between current and charge 
then value of VL will be
|
(a) |
(b) |
(c) |
(d) |
