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Two unknown resistance X and Y are conne...

Two unknown resistance X and Y are connected to left and right gaps of a meter bridge and the balancing point is obtained at 80 cm from left. When a `10Omega` resisance is connected in parallel to `x`, balance point is 50 cm from left. The values of X and Y respectively are

A

`40 Omega, 9 Omega`

B

`30 Omega, 7.5 Omega`

C

`20 Omega, 6 Omega`

D

`10 Omega, 3 Omega`

Text Solution

Verified by Experts

The correct Answer is:
B
`X/Y =80/(100-80)`……..(1)
`((10x)/(10+x))/Y = 50/50`…………(2)
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