When electric current flows in the same direction in two parallel electricity conducting wires, they experience ............... force between them.

When electric current flows in the same direction in two parallel…

For dimagnetic substances, magnetic susceptibility $(\chi)$ and intensity of magnetisation is $...............$

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For $...............$ value of magnetic susceptibility is positive and very large $x=10^2$.

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According to Lenz's law, induced current always opposes the change in $...............$

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When a lens of refractive index $n$ is placed in a liquid of refractive index $n$, lens becomes $...............$

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The nature of nuclear force is $...............$

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Spherical aberrations in a lens is $...............$ if the total deviation over the both surfaces are uniformly distributed.

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Direction of induced current is obtained by $...............$ Law.

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When dielectric material is kept between the plates of a capacitor, its capacitance $...............$

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The dimensional formula of electric potential is $...............$

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When a lens made of a material of refractive index $1.5$ is placed in a liquid of refractive index $1.7,$ its focal length will $...............$

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