Day 189: MHT-CET Physics

1. A.
   $\frac{u}{2a}$
2. B.
   $\frac{u^{2}}{4a^{2}}$
3. C.
   $\frac{u^{2}}{a}$
4. D.
   $\frac{u^{2}}{2a}$

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1. A.
   coercivity
2. B.
   retentivity
3. C.
   domain
4. D.
   saturation

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1. A.
   0.25 m
2. B.
   0.5 m
3. C.
   1 m
4. D.
   $\infty$

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1. A.
   $\dfrac{V^2}{r}$
2. B.
   $\dfrac{2V^2}{r}$
3. C.
   $\dfrac{2V^2}{\pi r}$
4. D.
   $\dfrac{V^2}{\pi r}$

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1. A.
   reduced in length.
2. B.
   increased in length.
3. C.
   made thinner.
4. D.
   widened.

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