A ferromagnet will become fully magnetized at_________________?

A. High voltage a.c
B. Low voltage a.c
C. Alternating current at its peak value
D. c current at peak value

Materials in which valence electrons are tightly bound to their atoms at low temperature are called___________________?

A. Semi conductor
B. Super conductors
C. Insulators
D. Conductor

The angular position of cells remains the same for a sample of a crystal. This property is called___________________?

A. Isotropy
B. Cleavage
C. Homogeneity
D. The external symmetry of form

If the density of atoms remain same along any direction in a crystal is called__________________?

A. Symmetry
B. Homogeneity
C. Isotropy
D. Cleavage

The band theory of solids explains satisfactorily the nature of_________________?

A. Electrical insulators alone
B. Electrical conductors alone
C. Electrical semi conductors alone
D. All of the above

Biomass can be converted into fuels by____________________?

A. Direct combustion
B. Fermentation
C. Both a and b
D. None of these

Which of the following substances posses the highest elasticity ?

A. Rubber
B. Steel
C. Glass
D. Copper

What are the dimensions of stress ?

A. Mlt-2
B. Ml-2t-1
C. Ml-1t-2
D. Ml-t-1

Which one of the following physical quantities does not have the dimensions of force per unit area ?

A. Stress
B. Strain
C. Youngs modulus
D. Pressure

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_________________?

A. Fe
B. (fe)
C. Fe2/l
D. Fe2