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If a white light is used in Young’s double slit experiments then a very large number of coloured fringes can be seen
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(a) With first order violet fringes being closer to the central white fringes |
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(b) First order red fringes being closer to the central white fringes |
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(c) With a central white fringe |
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(d) With a central black fringe |
The magnetic induction at a point P which is distant 4 cm from a long current carrying wire is 
. The field of induction at a distance 12 cm from the same current would be
|
(a) 3.33 |
(b) 1.11 |
(c) 3 |
(d) 9 |
The magnetic field in a coil of 100 turns and 40 square cm area is increased from 1 Tesla to 6 Tesla in 2 second. The magnetic field is perpendicular to the coil. The e.m.f. generated in it is
|
(a) |
(b) 1.2 V |
(c) 1.0 V |
(d) |
What is the equivalent capacitance between A and B in the given figure (all are in farad)
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(a) |
(b) |
(c) |
(d) |
If 
undergoes successively 8 a-decays and 6 b-decays, then resulting nucleus is
|
(a) |
(b) |
(c) |
(d) |
In an experiment of meter bridge, a null point is obtained at the centre of the bridge wire. When a resistance of 10 ohm is connected in one gap, the value of resistance in other gap is
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(a) 10 Ω |
(b) 5 Ω |
(c) |
(d) 500 Ω |
