Question:

If the matrices (10 00 ),( 10 00 ),( i0 00 )and( i0 00 )\left(\begin{matrix} 1 & 0 \\   0 & 0  \end{matrix}\right),\left(\begin{matrix}   -1 & 0 \\   0 & 0  \end{matrix}\right),\left(\begin{matrix}   i & 0 \\   0 & 0  \end{matrix}\right) and \left(\begin{matrix}   -i & 0 \\   0 & 0  \end{matrix}\right) form a group with respect to matrix multiplication, then which one of the following statements about the groups, thus formed is correct?

Updated On: Mar 12, 2025
  • The group has no element of order 4.
  • The group has an element of order 3.
  • The group is non-abelian
  • (10 00 )\left(\begin{matrix} -1 & 0 \\   0 & 0  \end{matrix}\right)is its own inverse
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The Correct Option is D

Solution and Explanation

The correct answer is(D): (10 00 )\left(\begin{matrix} -1 & 0 \\   0 & 0  \end{matrix}\right)is its own inverse
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