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Java Matrices Multiple Choice Questions and Answers

Quiz by ROHINI KALGHATGI

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14 questions
Show answers
  • Q1
    What is the result of multiplying a matrix by its inverse?
    Zero matrix
    Identity matrix
    Unit matrix
    Square matrix
    30s
  • Q2
    What is the identity matrix?
    A matrix with 1's on the diagonal and 0's elsewhere
    A matrix with equal values on all elements
    A matrix with 0's on all elements
    A matrix with 1's on all elements
    A matrix with 0's on the diagonal and 1's elsewhere
    30s
  • Q3
    What is the transpose of a matrix?
    A matrix obtained by subtracting one matrix from another
    A matrix with the same dimensions as the original matrix
    A matrix obtained by multiplying each element by a scalar
    A matrix obtained by interchanging its rows and columns
    A matrix obtained by adding the elements of two matrices
    30s
  • Q4
    What is the trace of a matrix?
    The number of rows or columns in a matrix
    The product of diagonal elements of a square matrix
    The sum of all elements of a matrix
    The determinant of a square matrix
    The sum of diagonal elements of a square matrix
    30s
  • Q5
    What is the rank of a matrix?
    The product of all elements in a matrix
    The sum of all elements in a matrix
    The determinant of a matrix
    The maximum number of linearly independent rows or columns in a matrix
    The number of rows or columns in a matrix
    30s
  • Q6
    What is the result of adding two matrices?
    A matrix with dimensions (n x m)
    A scalar value
    A matrix with the same dimensions as the original matrices
    A matrix with dimensions (m x p)
    A vector with dimensions (m x n)
    30s
  • Q7
    What is the main diagonal of a matrix?
    The line of elements from the top left to the bottom right
    The vertical line dividing the matrix in half
    The line of elements from the top right to the bottom left
    The sum of all elements in the matrix
    The horizontal line dividing the matrix in half
    30s
  • Q8
    What is the result of multiplying two matrices A and B?
    A vector with dimensions (m x n)
    A matrix C with dimensions (n x m)
    A matrix C with dimensions (m x n)
    A matrix C with dimensions (m x p)
    A scalar value
    30s
  • Q9
    What is the term used to describe a square matrix with equal number of rows and columns?
    Square matrix
    Identity matrix
    Orthogonal matrix
    Sparse matrix
    30s
  • Q10
    Which of the following is NOT a valid matrix operation in Java?
    Matrix addition
    Matrix multiplication
    Matrix squaring
    Matrix transposition
    30s
  • Q11
    What is the term used to describe a matrix with all its elements set to zero?
    Identity matrix
    Sparse matrix
    Zero matrix
    Orthogonal matrix
    30s
  • Q12
    What is the term used to describe a matrix in which each element is multiplied by a scalar constant?
    Orthogonal matrix
    Sparse matrix
    Identity matrix
    Scalar matrix
    30s
  • Q13
    What is the term used to describe a matrix that remains unchanged when transposed?
    Orthogonal matrix
    Sparse matrix
    Symmetric matrix
    Identity matrix
    30s
  • Q14
    What is the term used to describe a matrix with only zero elements except for the main diagonal?
    Identity matrix
    Orthogonal matrix
    Diagonal matrix
    Sparse matrix
    30s

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