# A cell of emf  $$4~\text{V}$$ and internal resistance $$0.5~\Omega$$ is connected to a $$7.5~\Omega$$ external resistance. The terminal potential difference of the cell is: 1. $$3.75~\text{V}$$ 2. $$4.25~\text{V}$$ 3. $$4~\text{V}$$ 4. $$0.375~\text{V}$$

Subtopic:  EMF & Terminal Voltage |
69%
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NEET - 2022
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Given below are two statements:
 Statement I: In an AC circuit, the current through a capacitor leads the voltage across it. Statement II: In AC circuits containing pure capacitance only, the phase difference between the current and the voltage is $$\pi.$$

 1 Both Statement I and Statement II are correct. 2 Both Statement I and Statement II are incorrect. 3 Statement I is correct but Statement II is incorrect. 4 Statement I is incorrect but Statement II is correct.
Subtopic:  Different Types of AC Circuits |
66%
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NEET - 2022
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The equivalent resistance of the infinite network given below is:

1. $$2~\Omega$$
2. $$(1+\sqrt2)~\Omega$$
3. $$(1+\sqrt3)~\Omega$$
4. $$(1+\sqrt5)~\Omega$$
Subtopic:  Combination of Resistors |
51%
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A cricket ball is thrown by a player at a speed of $$20$$ m/s in a direction $$30^\circ$$ above the horizontal. The maximum height attained by the ball during its motion is: (Take $$g=10$$ m/s2)
1. $$5$$ m
2. $$10$$ m
3. $$20$$ m
4. $$25$$ m
Subtopic:  Projectile Motion |
71%
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NEET - 2022
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A closely packed coil having $$1000$$ turns has an average radius of $$62.8 ~\mathrm{cm}$$. If the current carried by the wire of the coil is $$1~ \text{A},$$ the value of the magnetic field produced at the centre of the coil will be:
(permeability of free space = $$4 \pi \times 10^{-7}~ \text{H/m}$$) nearly:
 1 $$10^{-1}~\text{T}$$ 2 $$10^{-2}~\text T$$ 3 $$10^{2}~\text T$$ 4 $$10^{-3}~\text{T}$$
Subtopic:  Magnetic Field due to various cases |
60%
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NEET - 2022
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An inductor of inductance $$2~\text{mH}$$ is connected to a $$220~\text{V}$$, $$50~\text{Hz}$$ ac source. Let the inductive reactance in the circuit is $$X_1$$. If a $$220~\text{V}$$ DC source replaces the AC source in the circuit, then the inductive reactance in the circuit is $$X_2$$. $$X_1$$ and $$X_2$$, respectively, are:
1. $$6.28~\Omega$$, zero
2. $$6.28~\Omega$$, infinity
3. $$0.628~\Omega$$, zero
4. $$0.628~\Omega$$, infinity
Subtopic:  Different Types of AC Circuits |
65%
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NEET - 2022
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During a cloudy day, a primary and a secondary rainbow may be created. Which of the following statement is correct?
 1 primary rainbow is due to double internal reflection and is formed above the secondary one. 2 primary rainbow is due to double internal reflection and is formed below the secondary one. 3 secondary rainbow is due to double internal reflection and is formed above the primary one. 4 secondary rainbow is due to a single internal reflection and is formed above the primary one.
Subtopic:  Total Internal Reflection |
66%
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The light rays having photons of energy $$4.2~\text{eV}$$ are falling on a metal surface having a work function of $$2.2~\text{eV}$$ . The stopping potential of the surface is:
 1 $$2~\text{eV}$$ 2 $$2~\text{V}$$ 3 $$1.1~\text{V}$$ 4 $$6.4~\text{V}$$
Subtopic:  Einstein's Photoelectric Equation |
63%
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In the diagram shown, the normal reaction force between $$2$$ kg and $$1$$ kg is:
(Consider the surface to be smooth and $$g=10$$ ms-2 )

1. $$25$$ N
2. $$39$$ N
3. $$6$$ N
4. $$10$$ N
Subtopic:  Tension & Normal Reaction |
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Identify the equivalent logic gate represented by the circuit given below:

1. $$\mathrm{OR}$$
2. $$\mathrm{NOR}$$
3. $$\mathrm{AND}$$
4. $$\mathrm{NAND}$$
Subtopic:  Logic gates |
58%
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NEET - 2022
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