12th Class Physics MCQS
A semiconductor in its extremely pure form is known as:
None of above
Both a and b
Intrinsic
Extrinsic
The material whose resistivity becomes zero below a certain temperature
Super conductors
Insulators
Conductors
Semi conductors
The SI unit of Stress is:
Nm2
NM-2
Nm3
Nm
Curie temperature is
Same for chromium oxide and cobalt
None of these
Same for iron and cobalt
Differen for chromium oxide and cobalt
Which of the following has bulk modulus?
Water
All
Honey
Gas
The first superconductor was discovered in:
1921
1876
1911
1831
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