MCQ
For the stability of radiated nucleus:
- ✓The binding energy per nucleon should be high.
- BThe binding energy per nucleon should be low.
- CThe number of electrons should be more.
- DNone of the above
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The force between two charges 0.06 m apart is 5 N. If each charge is moved towards the other by 0.01 m, then the force between them will become
|
(a) 7.20 N |
(b) 11.25 N |
(c) 22.50 N |
(d) 45.00 N |
Broadcasting antennas are generally
|
(a) Omnidirectional type |
(b) Vertical type |
(c) Horizontal type |
(d) None of these |
A simple microscope has:
An electron having charge ‘e’ and mass ‘m’ is moving in a uniform electric field E. Its acceleration will be
|
(a) |
(b) |
(c) |
(d) |
In above question the energy of the characteristic X-rays given out is
|
(a) Less than 40 keV |
(b) More than 40 keV |
(c) Equal to 40 keV |
(d) ≥ 40 keV |