Question # 1

In a soft iron, domains are

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easily oriented along external field and do not return to original random positions

easily oriented along external field and readily returns to originally random position

do no oriented along external field and also do not returns to originally random position

none of them

The smallest three dimensional basic structure in a crystalline solid is called

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lattice point

crystal lattice

cubic crystal

unit cell

In the phenomenon of hysteresis

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magnetism leads the magnetising current

magnetism lags behind the magnetising current

meganetism goes along the magnetising current

none of them

On heating, glass gradually softens into a paste like before it becomes a very viscous liquid at almost

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600°C

7600°C

800°C

900°C

The measure of the deformation in a solid when stress is applied to its is called

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elastic constant

young's modulus

strain

elasticity

The substance in which atoms are so oriented that the field produced by spin and orbital motion of the electrons might add up to zero,are called

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diamagnetic substances

ferromagnetic substances

paramagnetic substances

all of them

When a stress changes length, it is called the

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compressional stress

tensile stress

shear stress

any one of them

There are some whose resistivity becomes zero below a certain temperature, called

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absolute zero

0°C

critical temperature

lower fixed point

The solids are classified as:

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Metals

Crystalline

Amorphous

Polymeric

All except (A)

In a semi-conductor material, current flows due to

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positive charge

negative charge

both of them

none of them

The modulus of elasticity can be written as

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stress x strain

strain/stress

1/2 x stress x strain

stress/strain

Arsenic, antimony and phosphorus are the elements from

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third group

fourth group

fifth group

none of them

There is a regular arrangement of molecules in a

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amorphous solids

polymeric solids

crystalline solids

none of them

The substances in which, atom are so oriented that their fields support each other and the atoms behave like tiny magnets, are called

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diamagnetic substances

ferromagnetic substances

paramagnetic substances

all of them

The ability of the body to return to its original shape is called

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deformation

stretching

compressing

elasticity

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Physics ECAT Pre Engineering Chapter 17 Physics of Solid Online Test MCQs With Answers

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