The variation of susceptibility \((\chi)\) with absolute temperature \((T)\) for a paramagnetic material is represented as:
1.
2.
3.
4.
Subtopic: Curie's Law and Hysteresis (OLD NCERT) |
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The escape velocity of a body on the earth's surface is \(11.2~\text{km/s}.\) If the same body is projected upward with a velocity \(22.4~\text{km/s},\) the velocity of this body at an infinite distance from the centre of the earth will be:
| 1. | \(11.2\sqrt2~\text{km/s}\) | 2. | zero |
| 3. | \(11.2~\text{km/s}\) | 4. | \(11.2\sqrt3~\text{km/s}\) |
Subtopic: Escape velocity |
From NCERT
NEET - 2023
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A bullet of mass \(m\) hits a stationary block of mass \(M\) elastically. The transfer of energy is the maximum, when:
1. \(M=m\)
2. \(M=2m\)
3. \(M\ll m\)
4. \(M\gg m\)
1. \(M=m\)
2. \(M=2m\)
3. \(M\ll m\)
4. \(M\gg m\)
Subtopic: Collisions |
55%
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NEET - 2023
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The ground state energy of a hydrogen atom is \(-13.6~\text{eV}.\) The energy needed to ionize the hydrogen atom from its second excited state will be:
1. \(13.6~\text{eV}\)
2. \(6.8~\text{eV}\)
3. \(1.51~\text{eV}\)
4. \(3.4~\text{eV}\)
1. \(13.6~\text{eV}\)
2. \(6.8~\text{eV}\)
3. \(1.51~\text{eV}\)
4. \(3.4~\text{eV}\)
Subtopic: Bohr's Model of Atom |
60%
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NEET - 2023
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A lens is made up of \(3\) different transparent media as shown in the figure. A point object \(O\) is placed on its axis beyond \(2f\). How many real images will be obtained on the other side?
1. \(2\)
2. \(1\)
3. No image will be formed
4. \(3\)
1. \(2\)
2. \(1\)
3. No image will be formed
4. \(3\)
Subtopic: Lenses |
62%
From NCERT
NEET - 2023
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The diameter of a spherical bob, when measured with vernier callipers yielded the values: \(3.33\) cm, \(3.32\) cm, \(3.34\) cm, \(3.33\) cm and \(3.32\) cm. The mean diameter to appropriate significant figures is:
1. \(3.328\) cm
2. \(3.3\) cm
3. \(3.33\) cm
4. \(3.32\) cm
1. \(3.328\) cm
2. \(3.3\) cm
3. \(3.33\) cm
4. \(3.32\) cm
Subtopic: Measurement & Measuring Devices |
57%
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NEET - 2023
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On the basis of electrical conductivity, which one of the following material has the smallest resistivity?
1. Germanium
2. Silver
3. Glass
4. Silicon
1. Germanium
2. Silver
3. Glass
4. Silicon
Subtopic: Derivation of Ohm's Law |
64%
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NEET - 2023
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The mechanical quantity, which has dimensions of reciprocal of mass \((M^{-1}),\) is:
| 1. | angular momentum |
| 2. | coefficient of thermal conductivity |
| 3. | torque |
| 4. | gravitational constant |
Subtopic: Dimensions |
58%
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NEET - 2023
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For the given cycle, the work done during the isobaric process is:
1. \(200\) J
2. zero
3. \(400\) J
4. \(600\) J
1. \(200\) J
2. zero
3. \(400\) J
4. \(600\) J
Subtopic: Work Done by a Gas |
53%
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NEET - 2023
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An AC source is connected to the given circuit. The value of \(\phi\) will be:
| 1. | \(60^\circ\) | 2. | \(90^\circ\) |
| 3. | \(30^\circ\) | 4. | \(45^\circ\) |
Subtopic: Different Types of AC Circuits |
65%
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