A square matrix A=[a(ij)] in which a(ij)...

A square matrix `A=[a_(ij)]` in which `a_(ij)=0 for i!=j and a)(ij)=k` (constant) for i=j is called a (A) unit matrix (B) scalar matrix (C) null matrix (D) diagonal matrix

A

Unit matrix

B

Scalar matrix

C

Null matrix

D

Diagonal matrix

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The correct Answer is:

B

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