With a potentiometer null point were obtained at 140 cm and 180 cm wit – McqOptions

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1.	With a potentiometer null point were obtained at 140 cm and 180 cm with cells of emf 1.1 V and one unknown X volts. Unknown emf is [DCE 2002]
A.	1.1 V
B.	1.8 V
C.	2.4 V
D.	1.41 V
Answer» E.

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