The variation of susceptibility \((\chi)\) with absolute temperature \((T)\) for a paramagnetic material is represented as:
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Magnetic Materials |
50%
From NCERT
NEET - 2023
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A bullet of mass \(m\) hits a block of mass \(M\) elastically. The transfer of energy is the maximum, when:
1. \(M=m\)
2. \(M=2m\)
3. \(M<<m\)
4. \(M>>m\)
1. \(M=m\)
2. \(M=2m\)
3. \(M<<m\)
4. \(M>>m\)
Subtopic: Collisions |
54%
From NCERT
NEET - 2023
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The ground state energy of hydrogen atom is \(-13.6~\mathrm{eV}\). The energy needed to ionize hydrogen atom from its second excited state will be:
1. \(13.6~\mathrm{eV}\)
2. \(6.8~\mathrm{eV}\)
3. \(1.51~\mathrm{eV}\)
4. \(3.4~\mathrm{eV}\)
1. \(13.6~\mathrm{eV}\)
2. \(6.8~\mathrm{eV}\)
3. \(1.51~\mathrm{eV}\)
4. \(3.4~\mathrm{eV}\)
Subtopic: Bohr's Model of Atom |
51%
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NEET - 2023
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The escape velocity of a body on the earth's surface is \(11.2\) km/s. If the same body is projected upward with a velocity \(22.4\) km/s, the velocity of this body at infinite distance from the center of the earth will be:
1. \(11.2\sqrt2\) km/s
2. zero
3. \(11.2\) km/s
4. \(11.2\sqrt3\) km/s
1. \(11.2\sqrt2\) km/s
2. zero
3. \(11.2\) km/s
4. \(11.2\sqrt3\) km/s
Subtopic: Escape velocity |
From NCERT
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 |
Subtopic: Lenses |
56%
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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: Errors |
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From NCERT
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: Current & Current Density |
61%
From NCERT
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 |
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NEET - 2023
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The position of a particle is given by;
\(\vec r(t)=4t\hat i+2t^2\hat j+5\hat k\)
where \(t\) is in seconds and \(r\) in metre. Find the magnitude and direction of velocity \(v(t)\), at \(t=1~\mathrm{s}\), with respect to x-axis.
\(\vec r(t)=4t\hat i+2t^2\hat j+5\hat k\)
where \(t\) is in seconds and \(r\) in metre. Find the magnitude and direction of velocity \(v(t)\), at \(t=1~\mathrm{s}\), with respect to x-axis.
| 1. | \(4\sqrt2~ms^{-1},45^\circ\) | 2. | \(4\sqrt2~ms^{-1},60^\circ\) |
| 3. | \(3\sqrt2~ms^{-1},30^\circ\) | 4. | \(3\sqrt2~ms^{-1},45^\circ\) |
Subtopic: Speed & Velocity |
78%
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NEET - 2023
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For the given cycle, the work done during 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 |
From NCERT
NEET - 2023
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