The maximum stress which a body can bear is called

A semiconductor in its extremely pure form is known as

The angular deformation produced in a body is called

Semi-conductor have conductivities of the order of

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

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

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

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

Amorphous solids are Also Called

Which of the following is trivalent impurity?

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

Conductors are those materials in which energy gap is

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

SI unit of strain is

A moving hole in a diode behaves like a

The electrons in the outermost shell of an atom are called

A stress which changes one dimension only is called

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

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

Glassy solids have:

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

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

Stress required to produce a unit strain is called

Under the elastic firm the deformation produced in the material is

The electrons occupying the conduction band are known as

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

A structure that is intermediate between solid and liquid is called

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

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

A empty or partially filled band is called

The band above the valence band are normally

Amorphous solids are more similar to

Glass is also known as

The word amorphous means:

Bulk modulus, mathematically can be written as

Glass and high carbon steel are the examples of

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

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

The strain produced due to tensile stress is called

The dimensions of stress are:

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

SI unit of stress is same as of

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

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

The ratio of volumetric stress to volumetric strain is called

Young's modulus, mathematically can he written as

Arrangement of molecules in crystalline solids is studied by using:

Force applied on a unit area of a crystal is culled

Silicon and germanium in their pure form near OK is

The ratio Mishear stress to shear strain is called

The band above the valence band is called

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

Nm² is called

Insulators are those materials in which energy gap is

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

Insulators have conductivities ranging between

The valence band of an atom in a solid

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

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

Polymeric solids have

Stress is mathematically expressed as:

which of the following is polymeric solid?

Shear modulus, mathematically can be written as

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

The ratio of stress to strain is called

Every crystalline solid has:

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

Which of them is not a crystalline solid

Polymeric solids exhibit

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

When a covalent bond is broken in a doped semiconductor

Natural rubber has the formula:

Strain is the ratio of

Amorphous solids are more like

SI unit of stress is:

Artificial polymers are made by a chemical reaction known

Which of the following' is a crystalline solid?

Polymers may consists of

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

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

At room temperature, Ge or Si crystal becomes a

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

Conductivity of semiconductor increases by

Synthetic materials belong to

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

Sodium chloride exit in the form of

The dimensions of strain are

Deformation of body may be the change in its

Which of the following is pentavalent impurity?

The strain produced due to compressive stress is called

conduction based may be

The doped semiconductor materials are called

The unit of modulus of elasticity is

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

Molecules of solid possess

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

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

The reciprocal of bulk modulus is called

Conductors have conductivities of the order of

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

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

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