Match List I with List II.
List I
(Spectral Lines of Hydrogen for transitions from)
List II
(Wavelength (nm))
\(\mathrm{A.}\)
\(n_2=3\) to \(n_1=2\)
\(\mathrm{I.}\)
\(410.2\)
\(\mathrm{B.}\)
\(n_2=4\) to \(n_1=2\)
\(\mathrm{II.}\)
\(434.1\)
\(\mathrm{C.}\)
\(n_2=5\) to \(n_1=2\)
\(\mathrm{III.}\)
\(656.3\)
\(\mathrm{D.}\)
\(n_2=6\) to \(n_1=2\)
\(\mathrm{IV.}\)
\(486.1\)
Choose the correct answer from the options given below:
1.
\(\mathrm{A - III, B - IV, C - II, D - I}\)
2.
\(\mathrm{A - IV, B - III, C - I, D - II}\)
3.
\(\mathrm{A - I, B - II, C - III, D - IV}\)
4.
\(\mathrm{A - II, B - I, C - IV, D - III}\)
(Spectral Lines of Hydrogen for transitions from)
(Wavelength (nm))
Subtopic: Spectral Series |
55%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
A thermodynamic system is taken through the cycle \(abcda\). The work done by the gas along the path \(bc\) is:
1. \(30~\text J\)
2. \(-90~\text J\)
3. \(-60~\text J\)
4. zero
1. \(30~\text J\)
2. \(-90~\text J\)
3. \(-60~\text J\)
4. zero
Subtopic: Work Done by a Gas |
66%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
The terminal voltage of the battery, whose emf is \(10~\text V\) and internal resistance \(1~\Omega,\) when connected through an external resistance of \(4~\Omega\) as shown in the figure is:
| 1. | \(6~\text V\) | 2. | \(8~\text V\) |
| 3. | \(10~\text V\) | 4. | \(4~\text V\) |
Subtopic: EMF & Terminal Voltage |
64%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
In an ideal transformer, the turns ratio is \(\cfrac{N_p}{N_s}=\cfrac{1}{2} .\) The ratio \(V_s:V_p\) is equal to (the symbols carry their usual meaning):
| 1. | \(2:1\) | 2. | \(1:1\) |
| 3. | \(1:4\) | 4. | \(1:2\) |
Subtopic: Transformer |
63%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
A light ray enters through a right-angled prism at point \(P\) with the angle of incidence \(30^\circ\) as shown in figure. It travels through the prism parallel to its base \(BC\) and emerges along the face \(AC\). The refractive index of the prism is:
1. \({\dfrac{\sqrt5}{2}}\)
2. \({\dfrac{\sqrt3}{4}}\)
3. \({\dfrac{\sqrt3}{2}}\)
4. \({\dfrac{\sqrt5}{4}}\)
1. \({\dfrac{\sqrt5}{2}}\)
2. \({\dfrac{\sqrt3}{4}}\)
3. \({\dfrac{\sqrt3}{2}}\)
4. \({\dfrac{\sqrt5}{4}}\)
Subtopic: Prisms |
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
The quantities which have the same dimensions as those of solid angle are:
1. stress and angle
2. strain and arc
3. angular speed and stress
4. strain and angle
1. stress and angle
2. strain and arc
3. angular speed and stress
4. strain and angle
Subtopic: Dimensions |
63%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
A thin flat circular disc of radius \(4.5~\text {cm}\) is placed gently over the surface of water. If surface tension of water is \(0.07~\text{Nm}^{-1},\) then the excess force required to take it away from the surface is:
1. \(198~\text{N}\)
2. \(1.98~\text{mN}\)
3. \(99~\text{N}\)
4. \(19.8~\text{mN}\)
1. \(198~\text{N}\)
2. \(1.98~\text{mN}\)
3. \(99~\text{N}\)
4. \(19.8~\text{mN}\)
Subtopic: Surface Tension |
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
In the light of the above statements, choose the correct answer from the options given below:
| Assertion (A): | The potential \((V)\) at any axial point, at \(2~\text m\) distance (\(r\)) from the centre of the dipole of dipole moment vector \(\vec P\) of magnitude, \(4\times10^{-6}~\text{C m},\) is \(\pm9\times10^3~\text{V}.\) (Take \({\dfrac{1}{4\pi\varepsilon_0}}=9\times10^9\) SI units) |
| Reason (R): | \(V=\pm{\dfrac{2P}{4\pi\varepsilon_0r^2}},\) where \(r\) is the distance of any axial point situated at \(2~\text m\) from the centre of the dipole. |
| 1. | Both (A) and (R) are True and (R) is not the correct explanation of (A). |
| 2. | (A) is True but (R) is False. |
| 3. | (A) is False but (R) is True. |
| 4. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
Subtopic: Electric Potential |
51%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
In a uniform magnetic field of \(0.049~\text T\), a magnetic needle performs \(20\) complete oscillations in \(5\) seconds as shown. The moment of inertia of the needle is \(9.8 × 10^{-6} ~\text{kg m}^2\). If the magnitude of magnetic moment of the needle is \(x \times 10^{-5 }~\text {Am}^2;\) then the value of '\(x\)' is:
1. \(128\pi^2\)
2. \(50\pi^2\)
3. \(1280\pi^2\)
4. \(5\pi^2\)
1. \(128\pi^2\)
2. \(50\pi^2\)
3. \(1280\pi^2\)
4. \(5\pi^2\)
Subtopic: Bar Magnet |
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
If the monochromatic source in Young's double slit experiment is replaced by white light, then:
| 1. | there will be a central dark fringe surrounded by a few coloured fringes. |
| 2. | there will be a central bright white fringe surrounded by a few coloured fringes. |
| 3. | all bright fringes will be of equal width. |
| 4. | interference pattern will disappear. |
Subtopic: Young's Double Slit Experiment |
58%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
© 2024 GoodEd Technologies Pvt. Ltd.