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In a potentionmeter experiment, when thr...

In a potentionmeter experiment, when three cells A, B and C are connected in series, the balancing length is found to be 740 cm. If A and B are connected in series, balancing length is 440 cm and for B and C connected in series, it is 540 cm. The emf of `E_(A),E_(B)` and `E_(C)` are respectively (in volts)

A

`1,1.2" and "1.5`

B

`1,2," and "3`

C

`1.5,2" and "3`

D

`1.5,2.5" and "3.5`

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