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Electronics and Communication Engineering - Materials and Components

Exercise : Materials and Components - Section 9
6.
As per Curie-Weiss law, the magnetic susceptibility of a material varies as
T-2
T
T2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
The amount of time between the creation and recombination of a free electron and hole is called
relaxation time
life time
lorentz time
collision time
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
A photoconductor is a
conductor
semiconductor
insulator
superconductor
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.

Assertion (A): Both sodium and ferrous are ferromagnetic.

Reason (R): Both sodium and ferrous have body centred cubic structure.

Both A and R are true and R is correct explanation of A
Both A and R are true but R is not correct explanation of A
A is true but R is false
A is false but R is true
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
For iron, the ferromagnetic Curie temperature is
about 20 K
about 100°C
about -20°C
about 1000 K
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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