ECE - Questions and solutions set-old paper1

Electronics and communication Engineering Questions and solutions set-old paper1
Question:-
Option (A)
p11 p22- p12 p21=1
Option (B)
p11 p22- p12 p21=-1
Option (C)
p11 p22- p12 p21=0
Option (D)
p11 p22+ p11 p12 p21=0
Correct Option:
C
Question:-
Option (A)
noreal or complex solution
Option (B)
exactly two distinct complex solutions
Option (C)
a unique solution
Option (D)
aninfinite number of complex solutions
Correct Option:
A
Question:-
Option (A)
2
Option (B)
1
Option (C)
0.5
Option (D)
0
Correct Option:
A
Question:-
Option (A)
a unique solution
Option (B)
no solution
Option (C)
aninfinite numberof solutions
Option (D)
exactly two distinct solutions
Correct Option:
B