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(1) Holes works as virtual charge, although there is no charge on holes. (2) Effectual volume of hole is more than electron. (3) Mobility of hole is fewer than electron.
The nucleus of helium contains : (1)Four protons (2)Four neutrons (3)Two neutrons and two protons (4)Four protons and two electrons Ans: (3)Two neutrons and two prot
how heat energy is liberated during respiration?
What are the types of compound pendulum? ?
Two resistances have lengths in the ratio 1:4 and radius 1:2,specific resistances in ratio 3:1. compare their resistances. Solution) Given lengths l1=1 l
Basic concepts of electromagnetic spectrum: BASIC CONCEPTS 1. When Sun light falls on a prism, the transmitted light produces a sequence of colours called 'Spectrum'. 2
SQUIDs, or super conducting Quantum interference devices are used to measure minute changes in magnetic flux by means of a pair of Josephson junctions, often used to detect extrem
Q. Illustrate how do you find your body volume using a tape measure? Answer:- Correctly measure a container into which your body will fit comfortably. Previously you recog
Show that the Nusselt number for a sphere in a quiescent fluid is 2. Hint: Write the thermal resistance for the outer surface of the sphere in terms as both conductive and conve
Difference among sound and light waves: (i) For propagation of sound rays material phase is required but no material medium is needed for light waves. (ii)Sound rays are long
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