Day 171: MHT-CET Physics

1. A.
   $\frac{mgA}{2L}$
2. B.
   $\frac{mgA^2}{L}$
3. C.
   $\frac{mgA}{L}$
4. D.
   $\frac{mgA^2}{2L}$

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1. A.
   greater than that of B.
2. B.
   smaller than that of B.
3. C.
   same as that of B.
4. D.
   that no comparison can be made from the graphs.

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1. A.
   increase the magnetic field.
2. B.
   increase the level of the magnetic saturation of the core.
3. C.
   reduce the residual magnetism in the core.
4. D.
   reduce eddy current losses in the core.

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1. A.
   $4R$
2. B.
   $R/2$
3. C.
   $R/4$
4. D.
   $2R$

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1. A.
   2:1
2. B.
   3:1
3. C.
   4:1
4. D.
   6:1

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