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) |
53%
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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. $$M>>m$$
Subtopic:  Collisions |
53%
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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. $$3.4~\text{eV}$$
Subtopic:  Bohr's Model of Atom |
58%
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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
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 |
60%
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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
Subtopic:  Measurement & Measuring Devices |
55%
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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
Subtopic:  Derivation of Ohm's Law |
61%
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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 |
55%
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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:
 1 $$4\sqrt2~\text{ms}^{-1},45^\circ$$ 2 $$4\sqrt2~\text{ms}^{-1},60^\circ$$ 3 $$3\sqrt2~\text{ms}^{-1},30^\circ$$ 4 $$3\sqrt2~\text{ms}^{-1},45^\circ$$
Subtopic:  Speed & Velocity |
77%
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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. $$600$$
Subtopic:  Work Done by a Gas |
51%
From NCERT
NEET - 2023