Question

The resistance in 2 gaps of meter bridge are 10 ohm and 30 ohm if the resustance are interchanged the balancing point shifts by

Answer 1

hey mate plz proper question

Answer 2

$s = ( \frac{100 - l}{l} )r \: \: initially$

$30 = ( \frac{100 - l}{l} ) \times 10 = > l = 25cm$

$10 = ( \frac{100 - l}{l} ) \times 30 = > l = 75cm$

so, shift = 50 cm✔️✔️✔️