WorksheetsNon existence of free electrons in the nucleus
Total questions: 10
Worksheet time: 5mins
At room temperature, an intrinsic semiconductor has ……….
Many holes only
A few free electrons and holes
Many free electrons only
No holes or free electrons
A Balmer series spectrum is formed when electrons from excited state fall down to ground state of n= (a) .
Electrons and holes are equal in magnitude but opposite in polarity
True
False
Free electron theory has been developed in ----------- main stages
1
2
3
5
This is a graph that is seen on CRO. How is it change after full wave rectification process?
Highest energy level that can be occupied by an electron at 0 K
Excited state
Conduction state
Fermi energy
Average energy
In QFET, Energy levels are
discrete
continuous
discontinuous
has increasing value
Wolfgang Pauli formulated the law stating that ____ electrons can have the same set of quantum numbers.
no two
only two
only one
no one
Q4. Identify the device:
Bainbridge and Jordan Double Focusing Mass spectrograph
Bainbridge Mass spectrograph
Mass Spectrograph
None of the above
Who's model does this picture represent?
Dalton: 1803-1808
Thomson 1897
Rutherford 1911
Bohr 1913
