Answer :

Given: The quadratic equation and has no real roots.

Required: To find the value of k


Here,


b2–4ac<0 ( Quadratic equation has no real roots)


(5k)2–4(1)(16)<0


25k2<64


k2<


Applying Square root on both sides


√k2 <



The value of k is


Correct Option is - Option (C)

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