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

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1. A
   the ring will rotate with greater angular frequency.
2. B
   both will rotate with same angular frequency.
3. C
   the disc will rotate with greater angular frequency.
4. D
   both will rotate with same angular velocity.

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1. A
   $\frac{{QV}_{1}}{Q - Q_{1}}$
2. B
   $\frac{Q_{1}V_{1}}{Q + Q_{1}}$
3. C
   $\frac{Q_{1}}{Q}$
4. D
   $\frac{Q}{Q_{1}}$

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1. A
   electric conduction is not possible.
2. B
   width of depletion layer decreases.
3. C
   width of depletion layer increases.
4. D
   barrier voltage increases.

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1. A
   $\frac{T_{2}}{T_{1}}$
2. B
   $\frac{T_{1}}{T_{2}}$
3. C
   $\left( \frac{T_{2}}{T_{1}} \right)^{2}$
4. D
   $\left( \frac{T_{1}}{T_{2}} \right)^{2}$

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1. A
   zero
2. B
   one
3. C
   infinity
4. D
   $qB\sin\theta$

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1. A
   slope $\times d^{2}$
2. B
   $\frac{d}{\text{~slope~}}$
3. C
   $\frac{\text{~slope~}}{d}$
4. D
   slope $\times d$

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1. A
   $\frac{q}{2}$
2. B
   q
3. C
   2 q
4. D
   4 q

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1. A
   $\frac{1}{4\pi\sqrt{LC}}$
2. B
   $\frac{1}{2\pi\sqrt{LC}}$
3. C
   $\frac{1}{\pi\sqrt{LC}}$
4. D
   $\frac{2}{\pi\sqrt{LC}}$

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1. A
   $6\pi{TR}^{2}$
2. B
   $\ 24\pi TR^{2}$
3. C
   $\ 12\pi{TR}^{2}$
4. D
   $16\pi{TR}^{2}$

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

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1. A
   $\left( \frac{9gh}{11} \right)^{\frac{1}{2}}$
2. B
   $\left( \frac{10gh}{7} \right)^{\frac{1}{2}}$
3. C
   $\left( \frac{8gh}{7} \right)^{\frac{1}{2}}$
4. D
   $\left( \frac{6gh}{7} \right)^{\frac{1}{2}}$

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1. A
   2 g
2. B
   3 g
3. C
   4 g
4. D
   g

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

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1. A
   10
2. B
   $10^{2}$
3. C
   $10^{3}$
4. D
   $10^{4}$

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1. A
   $150,300,450,600,\ldots\ldots.$.
2. B
   $300,450,600,750,\ldots\ldots$.
3. C
   $300,400,500,600,\ldots\ldots$.
4. D
   $300,600,900,1200,\ldots\ldots$

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

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1. A
   -5 J
2. B
   -10 J
3. C
   -15 J
4. D
   -20 J

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

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1. A
   $\frac{Z}{R}$
2. B
   $\ \tan\phi$
3. C
   $\cot\phi$
4. D
   $\frac{R}{Z}$

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1. A
   square loop is greater.
2. B
   both the loops is same but not zero.
3. C
   both the loops is zero.
4. D
   circular loop is maximum.

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1. A
   50 g
2. B
   $25\text{ }g$
3. C
   10 g
4. D
   5 g

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1. A
   $\left( r_{1} + r_{2} \right)^{\frac{1}{2}}$
2. B
   $\left( r_{1} + r_{2} \right)^{2}$
3. C
   $\left( r_{1}^{2} + r_{2}^{2} \right)^{\frac{1}{2}}$
4. D
   $\left( r_{1} + r_{2} \right)^{3}$

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1. A
   $v_{1} - v_{3} = 2v_{1}$
2. B
   $v_{1} + v_{2} = v_{3}$
3. C
   $v_{1} - v_{2} = v_{3}$
4. D
   $v_{1} + v_{3} = v_{2}$

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1. A
   $\ \frac{{dT}_{A}}{2}$
2. B
   $\frac{{dT}_{A}}{\gamma}$
3. C
   $\ \gamma{dT}_{A}$
4. D
   $2{dT}_{A}$

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