| 2023-02-14 | \[
\left|\begin{array}{ccc}
1+\sin ^{2} \theta & \sin ^{2} \theta &... | 3:21 | 740 | |
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| 2023-02-14 | There are 2 women participating in a chess tournament. Every participant played 2 games with the... | 8:07 | 3 | |
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| 2023-02-14 | If the system of equations \( x+a y=0, a z+y=0 \) and \( \mathrm{ax... | 2:24 | 272 | |
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| 2023-02-14 | In the following
questions, a statement of assertion is followed by... | 3:12 | 1 | |
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| 2023-02-14 | In the following
questions, a statement of assertion is followed by... | 4:01 | 0 | |
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| 2023-02-14 | Let \( \mathrm{z}_{1}=1+\mathrm{i} \) and \( \mathrm{z}_{2}=-1-\mathrm{i} \). Find \( \mathrm{z}... | 7:23 | 5 | |
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| 2023-02-14 | For what real values of \( \mathrm{x} \& \mathrm{y} \) are the numbers \( -3+\mathrm{ix}^{2} \ma... | 6:16 | 2 | |
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| 2023-02-14 | In the following
questions, a statement of assertion is followed by... | 2:57 | 1 | |
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| 2023-02-14 | - An electron microscope uses electrons accelerated by a voltage of... | 2:04 | 12 | |
|
| 2023-02-14 | . In the Davisson and Germer experiment the velocity of electrons e... | 3:21 | 28 | |
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| 2023-02-14 | A particle of mass \( m \) is rigidly attached at \( A \) to a ring of mass \( 3 m \) and ... | 3:36 | 672 | |
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| 2023-02-14 | If \( (x+i y)^{1 / 3}=a+b i \), then prove that \( 4\left(a^{2}-b^{2}\right)=\frac{x}{a}+\frac{y... | 4:23 | 6 | |
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| 2023-02-14 | The number of three digit numbers having only two consecutive digits identical is:
(A) 153
(B) 1... | 8:15 | 7 | |
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| 2023-02-14 | (I) | 1:31 | 0 | |
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| 2023-02-14 | The absolute value of the determinant \( \left|\begin{array}{ccc}-1... | 3:15 | 56 | |
|
| 2023-02-14 | . In Davisson-Germer experiment, the wavelength associated with nic... | 2:35 | 3 | |
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| 2023-02-14 | . Wave nature of electrons is exploited in
(a) mass-spectrometer
(b... | 3:54 | 8 | |
|
| 2023-02-14 | A uniform disk turns at \( 2.4 \mathrm{rev} / \mathrm{s} \) around a frictionless axis. A nonrot... | 3:45 | 113 | |
|
| 2023-02-14 | At \( (0,0) \), the curve \( y^{2}=x^{3}+x^{2} \)
(A) touches \( x ... | 5:49 | 5 | |
|
| 2023-02-14 | If \( f \) and \( g \) are two increasing functions such that gof i... | 6:24 | 2 | |
|
| 2023-02-14 | de-Broglie hypothesis is true for
(a) particles which are very ligh... | 2:41 | 1 | |
|
| 2023-02-14 | A guardian with 6 wards wishes everyone of them to study either Law or Medicine or Engineering. ... | 6:26 | 6 | |
|
| 2023-02-14 | Davisson-Germer experiment verified
(a) particle nature of radiatio... | 3:32 | 2 | |
|
| 2023-02-14 | Davisson-Germer's electron diffraction arrangement is as shown
Corr... | 2:58 | 3 | |
|
| 2023-02-14 | Number of ways in which the letters of the word B U L B U L can be arranged in a line in a defin... | 13:14 | 5 | |
|
| 2023-02-14 | A plank \( P \) is placed on a solid cylinder \( S \), which rolls on a horizontal surface. The ... | 2:47 | 130 | |
|
| 2023-02-14 | Let \( f(x)=\left\{\begin{array}{ll}|x| & \text { for } 0|x| \leq 2... | 7:37 | 1 | |
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| 2023-02-14 | An electron is confined to a \( 1 \mathrm{~nm} \) wide region. Find... | 2:32 | 42 | |
|
| 2023-02-14 | - A spool of mass \( M \) and radius \( 2 R \) lies on an inclined plane
\( \mathrm{P} \) as sho... | 3:16 | 23 | |
|
| 2023-02-14 | The existence of the unique solution of the system \( x+y+z=\lambda... | 2:50 | 226 | |
|
| 2023-02-14 | If the system of equation
\[
3 x-2 y+z=0, \lambda x-14 y+15 z=0, x+... | 3:03 | 255 | |
|
| 2023-02-14 | A particle which has zero rest mass and non-zero energy and momentu... | 2:33 | 22 | |
|
| 2023-02-14 | The angle formed by the abscissa and the tangent to the parabola \(... | 5:51 | 0 | |
|
| 2023-02-14 | According to Heisenberg's uncertainty principle, it is not possible... | 2:07 | 14 | |
|
| 2023-02-14 | In the previous problem the normal force between the ball and the shell in position \( B \) is
\... | 4:01 | 2 | |
|
| 2023-02-14 | If \( \Delta x \) is uncertainty in the specification of position a... | 1:38 | 4 | |
|
| 2023-02-14 | If \( \mathrm{A}=\sin \frac{2 \pi}{7}+\sin \frac{4 \pi}{7}+\sin \frac{8 \pi}{7} \) and \( \mathr... | 11:32 | 17 | |
|
| 2023-02-14 | Wave is associated with matter
(a) when it is stationary
(b) when i... | 2:08 | 20 | |
|
| 2023-02-14 | Maximum and minimum value of \( 2 \sin ^{2} \theta-3 \sin \theta+2 \) is -
P
(A) \( \frac{1}{4},... | 9:51 | 11 | |
|
| 2023-02-14 | In the figure shown mass of both, the spherical body and block is \( m \). Moment of inertia
\( ... | 4:21 | 140 | |
|
| 2023-02-14 | A uniform \( \operatorname{rod} A B \) of mass \( m \) and length \( 2 a \) is falling freely wi... | 3:15 | 19 | |
|
| 2023-02-14 | Which of the following figures represent the variation of particle ... | 2:19 | 4 | |
|
| 2023-02-14 | Calculate the
(i) momentumand
(ii) de-Broglie wavelength of electro... | 3:41 | 28 | |
|
| 2023-02-14 | The maximum value of the function \( \sin x(1+\cos x) \) is
\( \mat... | 8:47 | 19 | |
|
| 2023-02-14 | A particle is moving three times as fast that of an electron. The r... | 2:59 | 123 | |
|
| 2023-02-14 | The value of \( \sin \frac{\pi}{14} \sin \frac{3 \pi}{14} \sin \frac{5 \pi}{14} \) is :-
\( \mat... | 6:58 | 11 | |
|
| 2023-02-14 | क्षेत्र में वृत्ताकार मार्ग में चक्कर लगा रहा है। ज्ञात कीजिए : वृत्ताकार मार्ग की त्रिज्या तथा | 3:02 | 56 | |
|
| 2023-02-14 | An electron, an \( \alpha \)-particle and a proton have the same ki... | 2:52 | 5 | |
|
| 2023-02-14 | \( x+k y-z=0,3 x-k y-z=0 \) and \( x-3 y+z=0 \) has non-zero soluti... | 2:21 | 379 | |
|
| 2023-02-14 | The exact value of \( \frac{96 \sin 80^{\circ} \sin 65^{\circ} \sin 35^{\circ}}{\sin 20^{\circ}+... | 7:06 | 291 | |
|
| 2023-02-14 | Ultraviolet light of wavelength \( 200 \mathrm{~nm} \) is incident ... | 3:03 | 28 | |
|
| 2023-02-14 | In the above problem, when the man has walked once around the platform so that he is at his orig... | 3:52 | 92 | |
|
| 2023-02-14 | The sum of two numbers is 3 , then max value of the product of the ... | 8:45 | 0 | |
|
| 2023-02-14 | 16 players \( \mathrm{P}_{1}, \mathrm{P}_{2}, \mathrm{P}_{3}, \ldots \ldots . \mathrm{P}_{16} \)... | 8:57 | 4 | |
|
| 2023-02-14 | In the above problem, the final angular velocity of the small cylinder is
(1) \( \frac{\omega_{0... | 6:01 | 25 | |
|
| 2023-02-14 | The value of the determinant
\( \mathrm{P} \) \( \left|\begin{array... | 3:06 | 575 | |
|
| 2023-02-14 | The work function for aluminium surface is \( 4.2 \mathrm{eV} \).
T... | 2:13 | 33 | |
|
| 2023-02-14 | If the rate of increase of \( \frac{x^{2}}{2}-2 x+5 \) is twice the... | 3:54 | 2 | |
|
| 2023-02-14 | If \( h \) is Planck's constant, the momentum of a photon of wavele... | 1:49 | 14 | |
|
| 2023-02-14 | Electrons used in an electron microscope are accelerated by a volta... | 2:16 | 22 | |
|
| 2023-02-14 | A circular platform is mounted on a vertical frictionless axle. Its radius is \( r=2 \mathrm{~m}... | 2:56 | 74 | |
|
| 2023-02-14 | de-Broglie hypothesis is
(a) wave can behave like a particle
(b) a ... | 2:55 | 14 | |
|
| 2023-02-14 | Electrons with de-Broglie wavelength \( \lambda \) fall on the targ... | 2:26 | 18 | |
|
| 2023-02-14 | The absolute maximum of \( y=x^{3}-3 x+2 \) in \( [0,2] \) is
(A) 4... | 9:00 | 1 | |
|
| 2023-02-14 | - If alpha particle, proton and electron move with the same momentu... | 2:21 | 28 | |
|
| 2023-02-14 | In the form of dichromate, \( \mathrm{Cr}(\mathrm{VI}) \) is a stro... | 3:35 | 7 | |
|
| 2023-02-14 | Rank the following groups of compounds in order of decreasing solubility in \( \mathrm{H}_{2} \m... | 2:01 | 7 | |
|
| 2023-02-14 | The combinatorial coefficient \( { }^{\mathrm{n}-1} C_{\mathrm{p}} \) denotes
(A) the number of ... | 15:03 | 3 | |
|
| 2023-02-14 | There are two sources of light, each emitting with a power of \( 20... | 2:44 | 11 | |
|
| 2023-02-14 | 16 players \( \mathrm{P}_{1}, \mathrm{P}_{2}, \mathrm{P}_{3}, \ldots \ldots . \mathrm{P}_{16} \)... | 7:46 | 0 | |
|
| 2023-02-14 | The de-Broglie wavelength of a particle of \( \mathrm{KE}, K \) is ... | 2:08 | 24 | |
|
| 2023-02-14 | Generally transition elements and their salts are coloured due to t... | 4:01 | 2 | |
|
| 2023-02-14 | 16 players \( \mathrm{P}_{1}, \mathrm{P}_{2}, \mathrm{P}_{3}, \ldots \ldots . . \mathrm{P}_{16} ... | 8:40 | 69 | |
|
| 2023-02-14 | The number of photons entering the pupil of our eye per second, whe... | 3:35 | 13 | |
|
| 2023-02-14 | Portion \( A B \) of the wedge shown in the figure is rough and \( B C \) is smooth. A solid cyl... | 5:13 | 12 | |
|
| 2023-02-14 | The determinant \( \left|\begin{array}{ccc}4+x^{2} & -6 & -2 \\ -6 ... | 1:28 | 1,360 | |
|
| 2023-02-14 | The minors of \( -4 \) and 9 and the co-factors of \( -4 \) and 9
\... | 3:07 | 902 | |
|
| 2023-02-14 | A proton and an \( \alpha \)-particle are accelerated through the s... | 2:50 | 12 | |
|
| 2023-02-14 | \( x^{x} \) has a stationary point at
(A) \( \quad x=e \)
(B) \( x=... | 5:53 | 1 | |
|
| 2023-02-14 | A horizontal turn table in the form of a disc of radius \( r \) carries a gun at \( G \) and rot... | 5:45 | 42 | |
|
| 2023-02-14 | The de-Broglie wavelength associated with an electron moving with a... | 1:49 | 17 | |
|
| 2023-02-14 | The function \( f(x)=\sum_{k=1}^{5}(x-k)^{2} \) assumes minimum val... | 7:06 | 4 | |
|
| 2023-02-14 | Wavelength of an electromagnetic wave is
(a) more than de-Broglie w... | 2:13 | 7 | |
|
| 2023-02-14 | For the function \( f(x)=x^{2}-6 x+8,2 \leq x \leq 4 \), the value ... | 7:09 | 0 | |
|
| 2023-02-14 | . A photocell cannot be used
(a) for reproduction of sound in motio... | 4:35 | 31 | |
|
| 2023-02-14 | Transition elements show magnetic moment due to spin and orbital mo... | 3:35 | 8 | |
|
| 2023-02-14 | Number of ways in which 3 numbers in A.P. can be selected from \( 1,2,3, \ldots \ldots \mathrm{n... | 13:22 | 0 | |
|
| 2023-02-14 | de-Broglie wavelength associated with an electron, accelerating thr... | 2:09 | 7 | |
|
| 2023-02-14 | Two cylinders having radii \( 2 R \) and \( R \) and moment of inertia \( 4 I \) and \( I \) abo... | 3:47 | 29 | |
|
| 2023-02-14 | Rank the following groups of compounds in order of decreasing solubility in \( \mathrm{H}_{2} \m... | 1:37 | 20 | |
|
| 2023-02-14 | . de-Broglie wavelength of a body of mass \( m \) and kinetic energ... | 1:52 | 111 | |
|
| 2023-02-14 | A photocell converts
(a) change in current into change in light int... | 3:11 | 6 | |
|
| 2023-02-14 | Six married couple are sitting in a room. Find the number of ways in which 4 people can be selec... | 10:57 | 398 | |
|
| 2023-02-14 | The de-Broglie wavelength \( \lambda \)
(a) is proportional to mass... | 1:47 | 21 | |
|
| 2023-02-14 | The combinatorial coefficient \( \mathrm{C}(\mathrm{n}, \mathrm{r}) \) is equal to
(A) number of... | 16:17 | 5 | |
|
| 2023-02-14 | एक इलेक्ट्रॉन तथा एक प्रोटॉन समान चाल से किसी एकसमान चुम्बकीय क्षेत्र में क्षेत्र के लम्बवत् प्र... | 2:39 | 100 | |
|
| 2023-02-14 | If \( x+y=3-\cos 4 \theta \) and \( x-y=4 \sin 2 \theta \) then
(A) \( x^{4}+y^{4}=9 \)
(B) \( \... | 6:46 | 21 | |
|
| 2023-02-14 | If an electron is accelerated from rest through a potential of \( V... | 2:09 | 2 | |
|
| 2023-02-14 | A uniform rod of mass \( m \) and length \( l \) is placed over a smooth horizontal surface alon... | 4:40 | 13 | |
|
| 2023-02-14 | If tangent to the curve \( x=a^{2}, y=2 a \) is perpendicular to \(... | 5:45 | 0 | |
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