A. Isotropy
B. Cleavage
C. Homogeneity
D. The external symmetry of form
Correct Answer: The external symmetry of form ✔
Last Updated: February 11, 2021
Related MCQs
- The net charge on n-type material is__________?
- In a semiconductors the charge carriers are __________?
- Holes can exist in__________?
- Many of the semi conductors are crystals of the type__________?
- The electrons in conduction band are free to__________?
- A vacant or partially filled band is called __________?
- In simple cube one atom or molecule lies at its__________?
- The breaking of crystals along definite direction is called __________?
- The bulk properties of materials such as their mode of fracture can be related to their__________?
- Coercive force is the force which opposes __________?
- The curie temperature is that at which __________?
- Any alteration produced in shapes length or volume when a body is subjected to some external force is called__________?
- A wire obeys Hooks law is of length 11 when it is in equilibrium under a tension F1. Its length becomes 12 when the tension is increased to F2. The energy stored in the wire during this process is__________?
- Materials that undergo plastic deformation before breaking are called __________?
- A uniform steel wire of length 4m and area of cross-section 3×10-6m2 is extended by 1mm by the application of a force. If the youngs modulus of steel is 2×1011 Nm-2 the energy stored in the wire is__________?
- A rubber cord of cross-sectional area 2cm2 has a length of 1m. When a tensile force of 10N is applied the length of the cord increases by 1cm. What is the youngs modulus of rubber ?
- What is the SI unit of modulus of elasticity of substance ?
- Energy needed to magnetize and demagnetize is represented by __________?
- Very weak magnetic fields are detected by__________?
- On the basis of band theory of solids the semiconductors have __________?
- With increase in temperature the electrical conductivity of intrinsic semi conductor__________?
- Which one has the greatest energy gap ?
- A completely filled band is called__________?
- The band theory of solids explains satisfactorily the nature of__________?
- If the density of atoms remain same along any direction in a crystal is called__________?
- Materials in which valence electrons are tightly bound to their atoms at low temperature are called__________?
- A ferromagnet will become fully magnetized at__________?
- The energy band occupied by the valence electrons is called__________?
- Formation of large molecule by joining small molecules is__________?
- A wire is stretched by a force F which causes an extension 1. The energy stored in the wire is__________?
- The ration stress to strain in youngs modulus of the material then tension is__________?
- A certain stress applied to an elastic material produces a certain strain in it. If the elastic limit is not exceeded the energy gained per unit volume of the material is given by__________?
- A wire suspended vertically from one end is stretched by attaching a weight of 20N to the lower end. The weight stretches the wire by 1mm. How much energy is gained by the wire ?
- When a force is applied at one end of an elastic wire it produces at strain ∝ in the wire. If y is the youngs modulus of the material of the wire the amount of energy stored per unit volume of the wire is given by__________?
- A wire of length L is stretched by a length E when a force F is applied at one end. If the elastic limit is not exceeded the amount of energy stored in the wire is__________?
- Which one of the following physical quantities does not have the dimensions of force per unit area ?
- What are the dimensions of stress ?
- Which of the following substances posses the highest elasticity ?