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KCET 2021 Physics Solved Paper
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© examsnet.com
Question : 51
Total: 60
In the given arrangement of experiment on meter bridge, if AD corresponding to null deflection of the galvanometer is X, what would be its value if the radius of the wire AB is doubled?
X
X
4
4X
2X
Validate
Solution:
In a meter bridge, balancing length of the wire is independent of the area of cross-section of the wire.
So, if the radius of wire AB is doubled, the balancing length will still be X only.
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