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. D.C current at peak value
Physics MCQs with Answers
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
A completely filled band is called__________________?
A. Conduction band B. Valence band C. Forbidden band D. Core band
Which one has the greatest energy gap ?
A. Semi conductor B. Conductor C. Metals D. Non metals
With increase in temperature the electrical conductivity of intrinsic semi conductor___________________?
A. Decreases B. Increases C. Remains same D. First increases then decreases
On the basis of band theory of solids the semiconductors have _____________________?
A. A party filled valence band and totally empty conduction band B. A completely filled valence band a totally empty conduction band and a very wide forbidden band C. A completely filled valence band a partially filled conduction band and a narrow forbidden band D. A partly filled valence band a totally empty conduction band … Read more
Very weak magnetic fields are detected by___________________?
A. Squids B. Magnetic resonance imaging (MRI) C. Magnetometer D. Oscilloscope