Question

How can a null point be obtain near 50 cm

Answer 1

Answer:

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Explanation:

When the resistance in Gap 1 is very comparable with that in gap 2 of the metrebridge

Answer 2

The null point mostly obtain at the center the reason are given below

• The null point of the meter bridge defines the symmetry of the bridge.
• It tells about the balance point near the center
• The center point mostly lies in range  of the 40-60.
• As we know that there are four resistance in the meter bridge to make them symmetric
• We need to have the null point  to be there and needed to be adjusted as per the need.
• The so the null point is near 50 cm.