In an n-type silicon, which of the follo...

In an n-type silicon, which of the following statements is true?

electrons are majority carriers and trivalent atoms are the dopants

electrons are minority carriers and pentavalent atoms are dopants

holes are minority carriers and pentavalent atoms are dopants

holes are majority carriers and trivalent atoms are dopants

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In an n-type silicon, which of the following statement is true:

Electrons are majority carriers and trivalent atoms are the dopants.

Electrons are minority carriers and pentavalent atoms are the dopants.

Holes are minority carriers and pentavalent atoms are the dopants.

Holes are majority carriers and trivalent atoms are the dopants

`**` defined by `a**b=(a+b)/(2)` is a binary operation on `ZZ`

`**` defined by `a**b=(a+b)/2` is a binary operation on `QQ`

all binary commutative operations are associative

Subtraction is a binary operation on `NN`

If A={1,2,3,4,} and R={1,1), (2,2),(2,3), (1,2) } then the relation R on set A is reflexive.

Let A ={a,b,c,d) and a relation R on A be defined as follows :
R={a,c), (b,d), (b,c), (c,a), (d,b) }
Then R is a symmetric relation on A.

A reflexive relation defined on a non-empty set A is always symmetric.

The universal relation defined on a non-empty set A is transitive.