If the vectors $\to a$ and $\to b$ are perpendicular to each other, then a vector $\to v$ in terms of $\to a$ and $\to b$ satisfying the equations
$\to v . \to a = 0, \to v . \to b = 1 a n d [\to v \to a \to b] = 1$ is

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Tangent law is applicable to a dipole placed in two magnetic fields →B and →Bo when

The correct option is C ¯B and ¯Bo are perpendicular to each otherTangent law is defined in case when two magnetic fields are perpendicular to each other. So, when →B and →B0 are perpendicular to each other then only Tangent law is applicable.

Tangent law is applicable to a dipole placed in two magnetic fields $\to B$ and $\to B$ o when

The correct option is C $¯ B$ and $¯ B$ o are perpendicular to each other
Tangent law is defined in case when two magnetic fields are perpendicular to each other. So, when $\to B$ and ${\to B}_{0}$ are perpendicular to each other then only Tangent law is applicable.