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Cathode rays are : (1)Protons (2)Electrons (3)Neutrons (4)alfa -particles Ans; (2)Electrons
When is a system said to have attained equilibrium. Illustrate. The change in entropy of a system, in a procedure is positive. Would the process be a spontaneous one? Describe.
The order of density in nucleus is: (1)10 8 kg/cc (2)10 -8 kg/ cc (3)10 - 9kg/cc (4)10 12 kg/cc Ans; (4)10 12 kg/cc
p-type semiconductor: Consider a trivalent impurity such as Gallium (Ga, Z = 31) is doped in a pure semiconductor germanium (Ge, Z = 32). Each Ga atom forms three covalent bonds
Details about halls effect
When a body is heated, it expands in terms of area, length & temperature and volume rises. In a solid, molecules may only have thermal agitation. As temperature of a object enhance
Their resistivity is very low and temperature coefficient of resistance is not constant. These are materials with unfilled or overlapping energy bands. Current carriers here are fr
Method of Making magnet: There are two types of making magnets. Single Touch Method: a. In this method a bar magnet is rubbed on a hard steel bar. b. The magnet is k
Describe the construction and working of acousting grating. Construction and Working of Acousting Grating: The liquid is acquired into a glass cell. The Piezo-electric cryst
common lead acid battery faults: Careful treatment of lead acid batteries prevents damage and early failure, however, some common faults associated with lead acid batteries are
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