With a change of load resistance of a tr...

With a change of load resistance of a triode, used as an amplifier, from 50 k ilo o h m s to 100 k ilo o h m s , its voltage amplification changes from 25 to 30. Plate resistance of the triode is

`25 k Omega`

`75 k Omega`

`7.5 k Omega`

`2.5 k Omega`

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