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Chapter 17 - Physics of Solids - 3
1.
Iron is______________ magnetic material than steel.
a) Hard
b) Soft
c) Proper
2.
A crystalline solid has:
a) Rotational energy
b) Only vibrational energy
c) Low KE
d) An ordered structure
3.
A solid having irregular arrangement of molecules is called:
a) Crystalline
b) Polymeric
c) Amorphous
d) Ideal
4.
Molecules of a solid possess:
a) Circular motion
b) Vibrational motion
c) Rotatory motion
d) Translatory motion
5.
Array of points representing atoms, ions or molecules of a crystal arranged at different sites in a three dimensional space is called:
a) Substance
b) Solid
c) Compound
d) Crystal lattice
6.
Force applied on a unit area of a crystal is called:
a) Strain
b) Stress
c) Flexibility
d) Elasticity
7.
SI unit of stress is:
a) N-m-2
b) Newton
c) Dynes m-1
d) N x m
8.
A stress which changes one dimension only is called:
a) Compressive stress
b) Linear stress
c) Linear strain
d) Compressive
9.
Strain is the ratio of:
a) Fore x Area
b) Change in length/ original length
c) Force/Area
d) Stress/Strain
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