# The magnitude and direction of the current in the following circuit is: 1. $$1.5~\text{A}$$ from $$\mathrm{B}$$ to $$\mathrm{A}$$ through $$E$$ 2. $$0.2~\text{A}$$ from $$\mathrm{B}$$ to $$\mathrm{A}$$ through $$E$$ 3. $$0.5~\text{A}$$  from $$\mathrm{A}$$ to $$\mathrm{B}$$ through $$E$$ 4.  $$\dfrac{5}{9}~\text{A}$$ from $$\mathrm{A}$$ to $$\mathrm{B}$$ through $$E$$

Subtopic:  Kirchoff's Voltage Law |
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NEET - 2023
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An electric dipole is placed at an angle of $$30^\circ$$ with an electric field of intensity $$2\times 10^5 ~\text{NC}^{-1}$$. It experiences a torque equal to $$4~\text{N-m}$$. Calculate the magnitude of charge on the dipole if the dipole length is $$2~\text{cm}$$.
1. $$2~\text{mC}$$
2. $$8~\text{mC}$$
3. $$6~\text{mC}$$
4. $$4~\text{mC}$$
Subtopic:  Electric Dipole |
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NEET - 2023
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Let a wire be suspended from the ceiling (rigid support) and stretched by a weight $$W$$ attached at its free end. The longitudinal stress at any point of cross-sectional area $$A$$ of the wire is:
1. zero
2. $$\dfrac{2W}{A}$$
3. $$\dfrac{W}{A}$$
4. $$\dfrac{W}{2A}$$
Subtopic:  Stress - Strain |
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NEET - 2023
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The equivalent capacitance of the system shown in the following circuit is:

1. $$9~{\mu \text{F}}$$
2. $$2~{\mu \text{F}}$$
3. $$3~{\mu \text{F}}$$
4. $$6~{\mu \text{F}}$$
Subtopic:  Combination of Capacitors |
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The venturi-meter works on:
 1 The principle of perpendicular axes 2 Huygen's principle 3 Bernoulli's principle 4 The principle of parallel axes
Subtopic:  Bernoulli's Theorem |
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NEET - 2023
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$$12~\text{V},60~\text{W}$$ lamp is connected to the secondary of a step down transformer, whose primary is connected to ac mains of $$220~\text{V}$$. Assuming the transformer to be ideal, what is the current in the primary winding?
1. $$0.37~\text{A}$$
2. $$0.27~\text{A}$$
3. $$2.7~\text{A}$$
4. $$3.7~\text{A}$$
Subtopic:  Transformer |
68%
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NEET - 2023
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In a series $${LCR}$$ circuit, the inductance $${L}$$ is $$10~\text{mH}$$, capacitance $${C}$$ is $$1~\mu\text{F}$$ and resistance $${R}$$ is $$100~\Omega$$. The frequency at which resonance occurs is:
 1 $$1.59~\text{kHz}$$ 2 $$15.9~\text{rad/s}$$ 3 $$15.9~\text{kHz}$$ 4 $$1.59~\text{rad/s}$$
Subtopic:  Different Types of AC Circuits |
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NEET - 2023
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Two bodies of mass $$m$$ and $$9m$$ are placed at a distance $$R$$. The gravitational potential on the line joining the bodies where the gravitational field equals zero, will be: ($$G$$ = gravitational constant)
1. $$-\dfrac{20~Gm}{R}$$
2. $$-\dfrac{8~Gm}{R}$$
3. $$-\dfrac{12~Gm}{R}$$
4. $$-\dfrac{16~Gm}{R}$$
Subtopic:  Gravitational Potential |
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NEET - 2023
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Light travels a distance $$x$$ in time $$t_1$$ in air and $$10x$$ in time $$t_2$$ in another denser medium. What is the critical angle for this medium?
 1 $$\sin ^{-1}\left(\dfrac{10 t_1}{t_2}\right)$$ 2 $$\sin ^{-1}\left(\dfrac{ t_2}{t_1}\right)$$ 3 $$\sin ^{-1}\left(\dfrac{10 t_2}{t_1}\right)$$ 4 $$\sin ^{-1}\left(\dfrac{ t_1}{10t_2}\right)$$
Subtopic:  Total Internal Reflection |
62%
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NEET - 2023
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The amount of energy required to form a soap bubble of radius $$2~\text{cm}$$ from a soap solution is nearly:
$$($$surface tension of soap solution $$0.03~\text{Nm}^{-1})$$
1. $$50.1 \times 10^{-4}~\text{J}$$
2. $$30.16 \times 10^{-4}~ \text{J}$$
3. $$5.06 \times 10^{-4} ~\text{J}$$
4. $$3.01\times 10^{-4} ~\text{J}$$
Subtopic:  Surface Tension |
58%
From NCERT
NEET - 2023