Day 153: MHT-CET Physics

1. A.
   zero
2. B.
   $\frac{\mu_{0}I}{4\pi r}(\pi - 1)$
3. C.
   $\frac{\mu_{0}I}{2\pi r}(\pi + 1)$
4. D.
   $\frac{\mu_{0}I}{2\pi r}(\pi - 1)$

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1. A.
   $3:2$
2. B.
   $5:4$
3. C.
   $5:3$
4. D.
   $8:3$

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1. A.
   soft ferromagnetic substance.
2. B.
   diamagnetic substance only.
3. C.
   paramagnetic substance only.
4. D.
   both diamagnetic and paramagnetic substances.

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1. A.
   $1.5,12\text{ }cm$
2. B.
   $1.55,14\text{ }cm$
3. C.
   $1.6,11\text{ }cm$
4. D.
   $1.5,9\text{ }cm$

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1. A.
   $2r_{1}$
2. B.
   $3r_{1}$
3. C.
   $\ 4r_{1}$
4. D.
   $9r_{1}$

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