Build a question paper in 60 seconds.

1. A
   2.5 D
2. B
   −2.5 D
3. C
   1.25 D
4. D
   −1.25 D

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1. A
   P
2. B
   Q
3. C
   S
4. D
   R

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

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1. A
   $\frac{2}{3}\omega$
2. B
   $\frac{3}{4}\omega$
3. C
   $\frac{4}{3}\omega$
4. D
   $\frac{5}{4}\omega$

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1. A
   $10^{-7}\mu_0$
2. B
   $10^{-17}\mu_0$
3. C
   $10^{-6}\mu_0$
4. D
   $10^{-7}\mu_0$

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1. A
   $MgR$
2. B
   $\frac{7}{8}MgR$
3. C
   $\frac{5}{7}MgR$
4. D
   $\frac{3}{4}MgR$

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1. A
   $2.88\times10^{-2}$ J
2. B
   $7.2\times10^{-2}$ J
3. C
   $1.44\times10^{-2}$ J
4. D
   $3.6\times10^{-2}$ J

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1. A
   frequency of a.c. source is decreased.
2. B
   number of turns in the coil is reduced.
3. C
   a capacitance of reactance $X_L - X_C$ is included in the same circuit.
4. D
   an iron rod is inserted in the coil.

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1. A
   $0$
2. B
   $\frac{\pi}{2}$
3. C
   $\frac{5\pi}{3}$
4. D
   $\frac{8\pi}{3}$

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1. A
   $\frac{v^2 s}{2J}$
2. B
   $\frac{v^2}{4Js}$
3. C
   $\frac{v^2 s}{J}$
4. D
   $\frac{2v^2}{Js}$

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

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1. A
   1.25
2. B
   0.25
3. C
   5
4. D
   10

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1. A
   Zero
2. B
   5
3. C
   2
4. D
   20

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1. A
   $\frac{\gamma R}{\gamma-1}$
2. B
   $\gamma R$
3. C
   $\frac{1+\gamma}{1-\gamma}$
4. D
   $\frac{R}{\gamma-1}$

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1. A
   0.1 s
2. B
   0.01 s
3. C
   1 s
4. D
   20 s

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1. A
   $\frac{\pi}{2}$
2. B
   $\frac{\pi}{3}$
3. C
   $\frac{\pi}{4}$
4. D
   $\frac{\pi}{5}$

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

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1. A
   $\frac{PV}{\gamma-1}$
2. B
   $\frac{PV}{\gamma+1}$
3. C
   $(\gamma-1)PV$
4. D
   $(\gamma+1)PV$

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1. A
   30 mA
2. B
   17.5 mA
3. C
   15 mA
4. D
   12.5 mA

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1. A
   $\frac{\phi_2-\phi_1}{\varepsilon_0}$
2. B
   $\frac{\phi_1+\phi_2}{\varepsilon_0}$
3. C
   $\varepsilon_0(\phi_1-\phi_2)$
4. D
   $\varepsilon_0(\phi_2-\phi_1)$

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1. A
   15 cm
2. B
   18 cm
3. C
   20 cm
4. D
   24 cm

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1. A
   $\frac{Mgh}{3}$
2. B
   $\frac{Mgh}{6}$
3. C
   $\frac{Mgh}{4}$
4. D
   $\frac{Mgh}{2}$

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

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1. A
   $\frac{(n+s)}{s_1}$
2. B
   $\frac{s_1(n-s)-s_1}{s_1}$
3. C
   $\frac{(n+1)s}{s_1}$
4. D
   $\frac{s(n-1)+s_1}{s_1}$

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1. A
   increase by 10 times
2. B
   decrease by 10 times
3. C
   increase by 5 times
4. D
   remain unchanged

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