Question

In a metre bridge experiment. the ratio of the left-gap resistance to right gap resistance is 2: 3. The balance point from the left is ______.

Options

• 60 cm

• 50 cm

• 40 cm

• 20 cm

Answer 1

In a metre bridge experiment. the ratio of the left-gap resistance to right gap resistance is 2: 3. The balance point from the left is 40 cm.

Explanation:

`2/3=l/1000-l`

∴ `2 (100-l)=3l`

∴ `l=200/5=40 cm`