- A[M L T-2]
- B[M0 L0 T0 A1]
- C[M L3 T0]
- D[M L2 T-3]
Explanation:
The flow of charge per unit time is defined as current. The fundamental unit of current is Ampere (named after Andre Marie Ampere).
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Two coils of self inductance
and
are placed closer to each other so that total flux in one coil is completely linked with other. If M is mutual inductance between them, then
|
(a) |
(b) |
(c) |
(d) |
Continuous spectrum is not due to
|
(a) Hydrogen flame |
(b) Electric bulb |
|
(c) Kerosene oil lamp flame |
(d) Candle flame |
A nucleus decays by
emission followed by a gamma emission. If the atomic and mass numbers of the parent nucleus are Z and A respectively, the corresponding numbers for the daughter nucleus are respectively.
|
(a) Z - 1 and A - 1 |
(b) Z + 1 and A |
(c) Z - 1 and A |
(d) Z + 1 and A - 1 |
Consider telecommunication through optical fibres. Which of the following statements is not true
|
(a) Optical fibres may have homogeneous core with a suitable cladding |
|
(b) Optical fibres can be of graded refractive index |
|
(c) Optical fibres are subject to electromagnetic interference from outside |
|
(d) Optical fibres have extremely low transmission loss |
In a PN-junction
|
(a) P and N both are at same potential |
|
(b) High potential at N side and low potential at P side |
|
(c) High potential at P side and low potential at N side |
|
(d) Low potential at N side and zero potential at P side |