| 2023-06-09 | An object is kept at rest on the principal axis of a lens. Initially the object is at a distance... | 13:12 | 1 | |
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| 2023-06-09 | A luminous point object is placed at \( O \), whose image is formed at \( I \) as shown in figur... | 4:32 | 1 | Show |
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| 2023-06-09 | A prism of refractive index \( n_{1} \) and another prism of refractive index \( n_{2} \) are st... | 5:13 | 0 | |
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| 2023-06-09 | The convex surface of a thin concavo-convex lens of glass of refractive index 1.5 has radius of ... | 13:59 | 0 | |
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| 2023-06-09 | A pole of length \( 2.00 \mathrm{~m} \) stands half dipped in a swimming pool with water level \... | 8:24 | 0 | |
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| 2023-06-09 | In the figure shown \( L \) is a converging lens of focal length \( 10 \mathrm{~cm} \) and \( M ... | 12:06 | 8 | Show |
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| 2023-06-09 | Light travelling in air falls at an incidence angle of \( 2^{\circ} \) on one refracting surface... | 6:37 | 0 | |
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| 2023-06-09 | A point object \( O \) is placed at a distance \( 2 f \) from a thin convex lens of focal length... | 12:36 | 0 | |
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| 2023-06-09 | An insect of negligible mass is sitting on a block of mass \( M \), tied with a spring of force ... | 8:00 | 3 | |
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| 2023-06-09 | A ray of light travelling in air is incident almost along \( y \)-axis on medium of variable ref... | 5:31 | 0 | |
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| 2023-06-09 | A light ray is incident normally on the face \( A B \) of a rightangled prism \( A B C(\mu=1.50)... | 7:29 | 1 | |
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| 2023-06-09 | A ray of light enters a diamond ( \( \mu=2) \) from air and is being internally reflected near t... | 7:44 | 1 | |
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| 2023-06-09 | A plano convex lens \( (\mu=1.5) \) has maximum thickness of \( 1 \mathrm{~mm} \). If diameter o... | 6:21 | 2 | |
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| 2023-06-09 | A light ray is incident on face \( A B \) of prism \( A B C \) as shown in figure. The second pr... | 6:44 | 1 | Show |
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| 2023-06-09 | Find the angle of deviation suffered by the light ray shown in figure. The refractive index \( \... | 2:32 | 2 | Show |
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| 2023-06-09 | A point object \( O \) is placed at a distance of \( 20 \mathrm{~cm} \) in front of a equi-conve... | 7:43 | 0 | |
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| 2023-06-09 | Look at the ray diagram shown. What will be the focal lengths of the \( 1^{\text {st }} \) and t... | 10:55 | 2 | Show |
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| 2023-06-09 | An object is moving with constant speed \( v_{0} \), towards a concave mirror along its principa... | 13:03 | 0 | |
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| 2023-06-09 | A point object is moving with velocity \( \vec{v}_{o}=2 \hat{i}-3 \hat{j}+4 \hat{k} \) in front ... | 9:12 | 0 | |
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| 2023-06-09 | light due to prism will be
(a) \( 0.8^{\circ} \) upward
(b) \( 0.8^{\circ} \) downward
(c) \( 0.... | 5:03 | 3 | |
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| 2023-06-09 | A convergent beam is incident on two slabs placed in contact as shown in figure. Where will the ... | 4:52 | 0 | Show |
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| 2023-06-09 | An optical instrument used for angular magnification has a 25 D objective and a \( 20 \mathrm{D}... | 11:21 | 3 | |
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| 2023-06-09 | The reflecting surface is represented by the equation \( 2 x=y^{2} \) as shown in figure. A ray ... | 6:38 | 5 | Show |
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| 2023-06-09 | A beam of light consisting of red, green and blue is incident on a right angled prism. The refra... | 7:46 | 0 | |
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| 2023-06-09 | A beam of diameter \( d \) is incident on a glass hemisphere as shown. If the radius of curvat... | 5:11 | 1 | Show |
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| 2023-06-09 | The two lenses shown are illuminated by a beam of parallel light from the left. Lens \( B \) is ... | 5:57 | 3 | Show |
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| 2023-06-09 | Two thin lenses one concave of focal length \( 10 \mathrm{~cm} \) and the other a convex of foca... | 2:27 | 0 | |
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| 2023-06-09 | Two thin lenses of power \( +5 \mathrm{D} \) and \( -2 \mathrm{D} \) are placed in contact with ... | 4:43 | 1 | |
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| 2023-06-09 | A point object \( O \) moves from the principal axis of a converging lens in a direction \( O P ... | 3:35 | 0 | |
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| 2023-06-09 | An air bubble of radius \( R \) is inside water. The refractive index of water is \( 4 / 3 \). A... | 2:22 | 1 | |
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| 2023-06-09 | A ray incident at an angle \( 53^{\circ} \) on a prism emerges at an angle \( 37^{\circ} \) as s... | 3:48 | 0 | |
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| 2023-06-09 | In the figure shown find the total magnification after two successive reflections first on \( M_... | 5:39 | 0 | Show |
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| 2023-06-09 | A glass slab of width \( t \) , refractive index \( \mu \) is placed as shown in the figure. ... | 3:05 | 4 | Show |
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| 2023-06-09 | A rod of length \( \ell \) is moving with constant speed \( 1 \mathrm{~m} / \mathrm{s} \) toward... | 9:49 | 2 | |
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| 2023-06-09 | A fish floats in liquid with its eye at the centre of an opaque walled full tank of liquid of ci... | 4:10 | 0 | |
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| 2023-06-09 | Figure shows graph of deviation \( d \) versus angle of incidence for a light ray striking a pri... | 1:52 | 0 | Show |
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| 2023-06-09 | A thin rod of length \( d / 3 \) is placed along the principal axis of a concave mirror of focal... | 4:10 | 0 | |
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| 2023-06-09 | When a pin is moved along the principal axis of a small concave mirror, the image position coinc... | 2:28 | 0 | |
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| 2023-06-09 | If electric field intensity of a uniform plane electromagnetic wave is given as
\[
E=-301.6 \sin... | 13:14 | 1 | |
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| 2023-06-09 | A point object on the principal axis at a distance \( 15 \mathrm{~cm} \) in front of a concave m... | 4:19 | 0 | |
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| 2023-06-09 | A concave mirror forms an image of \( 20 \mathrm{~cm} \) high object on a screen placed \( 5.0 \... | 6:40 | 0 | |
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| 2023-06-09 | A square \( A B C D \) of side \( 1 \mathrm{~mm} \) is kept at distance \( 15 \mathrm{~cm} \) in... | 5:23 | 0 | |
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| 2023-06-09 | In the situation shown in figure, find the velocity of image.
(a) \( -5(1+\sqrt{3}) \hat{i}+5 \s... | 6:33 | 1 | Show |
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| 2023-06-09 | An EM wave propagating in \( x \)-direction has a wavelength of \( 8 \mathrm{~mm} \). The electr... | 10:38 | 2 | |
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| 2023-06-09 | Two plane mirrors are inclined to each other at an angle \( 60^{\circ} \). If a ray of light inc... | 4:08 | 0 | |
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| 2023-06-09 | An object and a plane mirror are as shown in figure. Mirror is moved with velocity \( V \) as sh... | 2:41 | 0 | Show |
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| 2023-06-09 | Match Column-I and Column-II
\begin{tabular}{|l|l|c|l|}
\hline \multicolumn{2}{|c|}{ Column-I } ... | 7:25 | 0 | |
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| 2023-06-09 | The intensity of the light from a bulb incident on a surface is \( 0.22 \mathrm{~W} / \mathrm{m}... | 4:10 | 0 | |
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| 2023-06-09 | Given below are two statements:
Statement-I: A time varying electric field is a source of changi... | 6:27 | 1 | |
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| 2023-06-09 | An object moves with \( 5 \mathrm{~m} / \mathrm{s} \) towards right while the mirror moves with ... | 3:07 | 0 | |
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| 2023-06-09 | Which is the correct ascending order of wavelength?
(a) \( \lambda_{\text {visible }}\lambda_{X ... | 3:54 | 1 | |
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| 2023-06-09 | A plane electromagnetic wave travels in a medium of relative permeability 1.61 and relative perm... | 8:29 | 7 | |
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| 2023-06-09 | The electromagnetic waves travel in a medium at a speed of \( 2.0 \times 10^{8} \mathrm{~m} / \m... | 3:16 | 0 | |
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| 2023-06-09 | The electric field in an electromagnetic wave is given by \( E_{0}=56.5 \sin \omega(t-x / c) N C... | 4:11 | 9 | |
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| 2023-06-09 | A plane electromagnetic wave propagating along \( y \)-direction can have the following pair of ... | 4:09 | 0 | |
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| 2023-06-09 | Sea water at frequency \( f=9 \times 10^{2} \mathrm{~Hz} \) has permittivity \( \varepsilon \app... | 8:26 | 0 | |
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| 2023-06-09 | A regular hexagonal lamina of side \( a \) is made up of perfectly absorbing material and is k... | 5:11 | 1 | |
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| 2023-06-09 | A plane electromagnetic wave of frequency \( 500 \mathrm{MHz} \) is travelling in vacuum along \... | 4:45 | 3 | |
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| 2023-06-09 | A current flowing in the winding of a long straight solenoid is increased at a sufficiently slow... | 5:50 | 5 | |
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| 2023-06-09 | Red light differs from blue light as they have
(a) Different frequencies and different wavelengt... | 3:49 | 4 | |
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| 2023-06-09 | The energy is transferred from a source of constant voltage \( V \) to a consumer by means of a ... | 9:44 | 7 | |
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| 2023-06-09 | For an electromagnetic wave travelling in free space, the relation between average energy densit... | 3:33 | 0 | |
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| 2023-06-09 | An em wave from the air enters a medium. The electric fields are \( \vec{E}_{1}=E_{01} \hat{x} \... | 7:53 | 2 | |
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| 2023-06-09 | A laser beam has intensity \( 2.5 \times 10^{14} \frac{\mathrm{W}}{\mathrm{m}^{2}} \). If the am... | 4:52 | 0 | |
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| 2023-06-09 | Figure illustrates a segment of a double line carrying direct current whose direction is indicat... | 4:28 | 0 | |
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| 2023-06-09 | A light beam travelling in the \( x \)-direction is described by the electric field \( E_{y}=300... | 5:35 | 2 | |
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| 2023-06-09 | Match the Column-I (Wavelength range of electromagnetic spectrum) with Column-II (Method of prod... | 6:32 | 0 | |
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| 2023-06-09 | The electric field associated with an EM wave in vacuum is given by \( \vec{E}=\hat{i} 40 \cos \... | 3:09 | 3 | |
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| 2023-06-09 | If the velocity of light in free space is \( 3 \times 10^{8} \mathrm{~m} / \mathrm{sec} \) then ... | 3:10 | 1 | |
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| 2023-06-09 | Comprehension
A charged circular plate capacitor is discharged by connecting its two plates by a... | 5:22 | 0 | |
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| 2023-06-09 | Comprehension
A circular parallel plate capacitor having plate radius \( R \) is charged by mean... | 5:31 | 1 | |
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| 2023-06-09 | Comprehension
The figure shown the variation of electric field \( E \) due to electromagnetic wa... | 3:58 | 3 | Show |
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| 2023-06-09 | Comprehension
The figure shown the variation of electric field \( E \) due to electromagnetic wa... | 3:07 | 1 | Show |
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| 2023-06-09 | Comprehension
A circular parallel plate capacitor having plate radius \( R \) is charged by mean... | 6:03 | 1 | |
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| 2023-06-09 | Comprehension
The figure shown the variation of electric field \( E \) due to electromagnetic wa... | 9:29 | 21 | Show |
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| 2023-06-09 | Comprehension
The figure shown the variation of electric field \( E \) due to electromagnetic wa... | 3:08 | 2 | Show |
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| 2023-06-09 | A light beam travelling in the \( x \)-direction is described by the electric field \( E_{y}=(30... | 10:28 | 4 | |
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| 2023-06-09 | The electric field in an EM wave in given by
\[
E=50 \sin \frac{2 \pi}{\lambda}(c t-x) \mathrm{N... | 4:10 | 1 | |
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| 2023-06-09 | Select the correct statement (s) from the following
(a) Displacement current comes into play in ... | 7:34 | 0 | |
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| 2023-06-09 | The amplitude of an electromagnetic wave in vacuum is doubled with no other changes made to the ... | 4:46 | 0 | |
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| 2023-06-09 | Select the correct statement(s) from the following
(a) Wavelength of microwaves is greater than ... | 5:51 | 0 | |
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| 2023-06-09 | An electromagnetic wave of intensity \( I \) falls on a surface kept in vacuum and exerts pressu... | 5:40 | 2 | |
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| 2023-06-09 | The frequency of light wave in a material is \( 2 \times 10^{14} \mathrm{~Hz} \) and wavelength ... | 3:13 | 0 | |
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| 2023-06-09 | The magnetic field in a plane \( \mathrm{EM} \) wave is given by \( B=(200 \mu \mathrm{T}) \sin ... | 4:20 | 0 | |
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| 2023-06-09 | The electric field part of an electromagnetic wave in a medium is represented by \( E_{x}=0 \)
\... | 6:02 | 4 | |
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| 2023-06-09 | An electric field of \( 300 \mathrm{~V} / \mathrm{m} \) is confined to a circular area \( 10 \ma... | 6:30 | 4 | |
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| 2023-06-09 | A lamp emits monochromatic green light uniformly in all directions. The lamp is \( 3 \% \) effic... | 4:15 | 0 | |
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| 2023-06-09 | A plane electromagnetic wave propagating in the \( x \)-direction has a wavelength of \( 60 \mat... | 5:09 | 0 | |
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| 2023-06-09 | The sun delivers \( 10^{3} \mathrm{~W} / \mathrm{m}^{2} \) of electromagnetic flux to the earths... | 3:50 | 0 | |
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| 2023-06-09 | A flood light is covered with a filter that transmits red light. The electric field of the emerg... | 3:10 | 4 | |
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| 2023-06-09 | A plane electromagnetic wave of frequency \( 40 \mathrm{MHz} \) travels in free space in the X-d... | 2:28 | 0 | |
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| 2023-06-09 | The intensity of TV broad cast station of \( E=800 \sin \left(10^{9} t-k x\right) \mathrm{V} / \... | 5:02 | 0 | |
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| 2023-06-09 | A long straight wire of resistance \( R \), radius \( a \) and length \( l \) carries a cons... | 4:53 | 2 | |
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| 2023-06-09 | To establish an instantaneous displacement current of \( 2 \mathrm{~A} \) in the space between t... | 3:34 | 0 | |
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| 2023-06-09 | A parallel plate capacitor of plate separation \( 2 \mathrm{~mm} \) is connected in an electric ... | 4:07 | 0 | |
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| 2023-06-09 | The sun delivers \( 10^{3} \mathrm{~W} / \mathrm{m}^{2} \) of electromagnetic flux to the earths... | 2:13 | 0 | |
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| 2023-06-09 | If a source of power \( 4 \mathrm{~kW} \) produces \( 10^{20} \) photons/second, the radiation b... | 5:52 | 2 | |
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| 2023-06-09 | The sun radiates electromagnetic energy at the rate of \( 3.9 \times 10^{26} \mathrm{~W} \). Its... | 3:14 | 0 | |
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| 2023-06-09 | About \( 5 \% \) of the power of a \( 100 \mathrm{~W} \) light bulb is converted to visible radi... | 2:32 | 0 | |
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| 2023-06-09 | The magnitudes of Poynting vector and electric field vector are respectively \( S \) and \( E \)... | 4:01 | 11 | |
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