# 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 |
54%
From NCERT
NEET - 2023
Please attempt this question first.
Hints
Please attempt this question first.

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 $$3.4~\mathrm{eV}$$
Subtopic:  Bohr's Model of Atom |
55%
From NCERT
NEET - 2023
Please attempt this question first.
Hints
Please attempt this question first.

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 |
59%
From NCERT
NEET - 2023
Please attempt this question first.
Hints
Please attempt this question first.

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%
From NCERT
NEET - 2023
Please attempt this question first.
Hints
Please attempt this question first.

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%
From NCERT
NEET - 2023
Please attempt this question first.
Hints
Please attempt this question first.

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%
From NCERT
NEET - 2023
Please attempt this question first.
Hints
Please attempt this question first.

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 |
52%
From NCERT
NEET - 2023
Please attempt this question first.
Hints
Please attempt this question first.

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 |
64%
From NCERT
NEET - 2023
Please attempt this question first.
Hints
Please attempt this question first.

The given circuit is equivalent to:

 1 2 3 4
Subtopic:  Logic gates |
61%
From NCERT
NEET - 2023
Please attempt this question first.
Hints
Please attempt this question first.

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%
From NCERT
NEET - 2023
Please attempt this question first.
Hints
Please attempt this question first.