12th Class Physics MCQS Chapter 6

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At 0 K a piece of silicon is a
All
Semi-conductor
Insulator
Conductor

The solid with definite M.L are called:
Polymeric
None of above
Crystalline
Amorphous

If both the length and radius of the rod are doubled, then the modulus of elasticity will:
Doubled
Decrease
Increase
Remains the same

Which of the modulus of elasticity is involved in compressing a rod to decrease its length ?
Young’s modulus
Bulk modulus
Modulus of elasticity
None of these

Natural rubber is an example of:
None of above
Polymeric solids
Amorphous solids
Crystalline solids

A wire stretched to double of its length, its strain is:
2
0.5
0
1

There is regular arrangement of molecules in:
Both a and b
Crystalline solids
Amorphous solids
None of above

Shear modulus is expressed as:
G = tan?/F/A
F/A/tan?
F/tan?
tan?/A

An ordinary glass gradually softness into a paste like state before it becomes a very viscous liquid which is possible at
600oC
800oC
100oC
900oC

The unit of strain is:
Nm2
Nm
Nm-2
no unit

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