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Q.A small magnet is pivoted such that it makes 10 oscillations per minute at a place where dip angle is 30° and total field is 0.4×10−40.4 × 10^{-4} T. The value of B_H is

a
0.2×10−40.2 \times 10^{-4} T
b
0.346×10−40.346 \times 10^{-4} T
c
0.4×10−40.4 \times 10^{-4} T
d
0.8×10−40.8 \times 10^{-4} T

Correct Answer: Option B

The correct solution involves applying the fundamental concept to derive the final value step by step...

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