Q 1387323287.     In a meter bridge experiment null point is obtained at `20 cm` from one end of the wire when resistance `X` is balanced against another resistance `Y.` If `X < Y`, then where will be the new position of the null point from the same end, if one decides to balance a resistance of `4X` against `Y` ?

A

`50` cm

B

`80` cm

C

`40` cm

D

`70` cm

HINT

`frac{R_1}{R_2} = frac{l_1}{l_2}`
0
Success Rate: NAN %
Sr. No.SubjectTagCorrectRecorded Answer