Question

.What is Polygraph?

A. Lie dectector

B. Sine wave Graph

C. Graph of ECG

D. A set of graphs​

Answer 1

Ans. A

Sol. • A polygraph, popularly referred to

as a lie detector, measures and records

several physiological indices such as

blood pressure, pulse, respiration, and

skin conductivity while the subject is

asked and answers a series of questions.

• The belief underpinning the use of the

polygraph is that deceptive answers will

produce physiological responses that can

be differentiated from those associated

with non-deceptive answers.

• The polygraph was invented in 1921 by

John Augustus Larson, a medical student

at the University of California, Berkeley

and a police officer of the Berkeley Police

Department in Berkeley, California.

Answer 2

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.What is Polygraph?

A. Lie dectector

B. Sine wave Graph

C. Graph of ECG

D. A set of graphs

HOpe iT HelP YOu DEaR