Exercise: Materials And Components

Questions for: Materials And Components

Assertion (A): In Figure, the intercept of the line on y-axis is equal to N (ae + ai), where N is number of atoms/m3, ae is electronic polarizability and ai is ionic polarizability.

Reason (R): ae and ai are independent of temperature.

A:
Both A and R are true and R is correct explanation of A
B:
Both A and R are true but R is not correct explanation of A
C:
A is true but R is false
D:
A is false but R is true
Answer: A

The intercept on y-axis equals N (ae + ai).

This intercept is constant because ae and ai are independent of temperature.

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Assertion (A): If difference between static and optical dielectric constant is high, the mechanical compressiblity of that material is also high.

Reason (R): For soft ions, ionic polarization per unit field is higher than that of hard ions.

A:
Both A and R are true and R is correct explanation of A
B:
Both A and R are true but R is not correct explanation of A
C:
A is true but R is false
D:
A is false but R is true
Answer: A
No answer description is available. Let's discuss.
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Paramagnetic materials have permanent magnetic dipoles but interaction between neighbouring dipoles is negligible.
A:
True
B:
False
C:
D:
Answer: A
No answer description is available. Let's discuss.
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Rochelle salt is a ferroelectric material.
A:
True
B:
False
C:
D:
Answer: A
No answer description is available. Let's discuss.
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In carbon resistor colour code, the third band is red. It indicates
A:
two zeros
B:
three zeros
C:
multiplier is 0.01
D:
multiplier is 0.1
Answer: A
No answer description is available. Let's discuss.
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