| 1 |
The solid with definite M.L are called: |
- A. Crystalline
- B. Amorphous
- C. Polymeric
- D. None of above
|
| 2 |
Domains are existed in |
- A. Ferromagnetic materials
- B. Paramagnetic materials
- C. Semi conductors
- D. Diamagnetic materials
|
| 3 |
The ability of a body to return to its original shape is called. |
- A. Strain
- B. Stress
- C. Elasticity
- D. Plasticity
|
| 4 |
Glass and high steel carbon are example of. |
- A. Ductile substances
- B. Brittle substances
- C. Soft substances
- D. Hard substances
|
| 5 |
Which of the following does not undergo plastic deformation. |
- A. Copper
- B. Wrought iron
- C. Head
- D. Glass
|
| 6 |
The temperature at which, semiconductor behaves as insulators: |
- A. 10k
- B. 0k
- C. 237k
- D. None of above
|
| 7 |
Donor impurities are |
- A. Germanium, silicon
- B. Indium, galium
- C. Antimony, arsenic
- D. Diamond, carbon
|
| 8 |
A wire stretched to double of its length, its strain is: |
|
| 9 |
Semiconductors have conductivity of order: |
- A. 10<sup>-8</sup> to 10<sup>-6</sup> (Ωm)<sup>-1</sup>
- B. 10<sup>-6</sup> to 10<sup>-4</sup> (Ωm)<sup>-1</sup>
- C. 10<sup>2</sup> to 10<sup>5</sup> (Ωm)<sup>-1</sup>
- D. 10<sup>-5</sup> to 10<sup>-7</sup> (Ωm)<sup>-1</sup>
|
| 10 |
Natural rubber is an example of: |
- A. Crystalline solids
- B. Amorphous solids
- C. Polymeric solids
- D. None of above
|