Stress varies linearly with strain with in ---- limit

The substances which creak just after the elastic limit is reached, arc called

SI unit of stress is:

Deformation of body may be the change in its

Amorphous solids are more similar to

Such a deformation in which the body regains its original shape after the removal of applied stress is called

A structure that is intermediate between solid and liquid is called

conduction based may be

Artificial polymers are made by a chemical reaction known

The materials in which there are plenty of free electron are called

The value of stress beyond which the body is permanently deformed is called

Young's modulus, mathematically can he written as

The process of adding a small amount of impurity into the pure semiconductor material is called

Which of them is not a crystalline solid

The reciprocal of bulk modulus is called

Force applied on a unit area of a crystal is culled

SI unit of stress is same as of

The branch of physics that deals with the nature and properties of matter in the solid state is called:

Conductors have conductivities of the order of

Amorphous solids are more like

A semiconductor in its extremely pure form is known as

Polymers may consists of

The forbidden energy gap of an insulator is of the order of

The band above the valence band is called

At 0 k, a piece of Ge or .Si is a perfect

A empty or partially filled band is called

In case of linear deformation, the ratio Of tensile stress to tensile strain is called

In the doping process, the ratio of the doping atoms to the semiconductor atom is

When a covalent bond is broken in a doped semiconductor

Synthetic materials belong to

A semi-conductor formed by the addition of a trivalent impurity is called

The strain energy stored in any length of wire due to action of stress appears as

Insulators have conductivities ranging between

Materials have specific uses depending upon their characteristics and properties such as:

Every crystalline solid has:

The electrons in the outermost shell of an atom are called

For semi-conductors narrow forbidden energy gap between the conduction and valence bands of a conductor is of the order of

A element or compound that has definite shape and volume is called:

The ratio of stress to strain is called

Stress is mathematically expressed as:

Glass and high carbon steel are the examples of

The doped semiconductor materials are called

The maximum stress which a body can bear is called

Glassy solids have:

Semi-conductor have conductivities of the order of

The whole structure obtained by the repetition of unit cell is known as

Polymeric solids exhibit

The band above the valence band are normally

The unit of modulus of elasticity is

A stress which changes one dimension only is called

Conductors are those materials in which energy gap is

The strain energy in a deformed wire of length l acted upon a force F can be graphically calculated by measuring

Which of the following' is a crystalline solid?

The materials in which valence electrons are bound very tightly to their atoms are known as

Nm² is called

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

Any alternation produced in shapes, length or volume when a body is subjected to some external Force is called

The force applied on unit area to produce any change in the shape, length or volume of a body is called

Arrangement of molecules in crystalline solids is studied by using:

SI unit of strain is

The dimensions of strain are

Glass is also known as

A n-type semiconductor is obtained by doping germanium or silicon with

Amorphous solids are Also Called

Ordinary glass, on heating gradually soften into a paste like state at almost:

The word amorphous means:

Bulk modulus, mathematically can be written as

The angular deformation produced in a body is called

Silicon and germanium in their pure form near OK is

Sodium chloride exit in the form of

The dimensions of stress are:

which of the following is polymeric solid?

Strain is the ratio of

Molecules of solid possess

The units of modulus of elasticity are the same as those of

The amount of strain energy stored in deformed stretched wire is equal to

Which of the following is trivalent impurity?

The electrons occupying the conduction band are known as

The strain produced due to tensile stress is called

Conductivity of semiconductor increases by

A solid having regular arrangement of molecules throughout its structure is called:

A moving hole in a diode behaves like a

At room temperature, Ge or Si crystal becomes a

The valence band of an atom in a solid

Polymeric solids have

Measure of deformation of a solid when stress is applied to it, is called

Shear modulus, mathematically can be written as

Within elastic limit, strain is directly proportional to stress, is the statement of

The atoms or molecules in a crystalline solids are held together by

Under the elastic firm the deformation produced in the material is

The ratio Mishear stress to shear strain is called

Insulators are those materials in which energy gap is

The strain produced due to compressive stress is called

The ratio of volumetric stress to volumetric strain is called

Which of the following is pentavalent impurity?

When stress changes the shape of a body, it is called

Which one of the following acts as a positive charge carrier in a semiconductor

When a stress changes the length of a body, it is called

Stress required to produce a unit strain is called

A semiconductor formed by the addition of a pentavalent impurity is called

Natural rubber has the formula:

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