If \(c\) is the velocity of light in free space, the correct statements about photon among the following are:
A.
The energy of a photon is \(E=h\nu.\)
B.
The velocity of a photon is \(c.\)
C.
The momentum of a photon, \(p={\dfrac{h\nu}{c}}.\)
D.
In a photon-electron collision, both total energy and total momentum are conserved.
E.
Photon possesses positive charge.
Choose the correct answer from the options given below:
1. \(\text {A, B, C}\) and \(\text {D}\) only
2. \(\text {A, C}\) and \(\text {D}\) only
3. \(\text {A, B, D}\) and \(\text {E}\) only
4. \(\text {A}\) and \(\text {B}\) only
Subtopic: Particle Nature of Light |
56%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
Two bodies \(A\) and \(B\) of same mass undergo completely inelastic one dimensional collision. The body \(A\) moves with velocity \(v_1\) while body \(B\) is at rest before collision. The velocity of the system after collision is \(v_2\). The ratio \(v_1:v_2\) is:
1. \(2:1\)
2. \(4:1\)
3. \(1:4\)
4. \(1:2\)
1. \(2:1\)
2. \(4:1\)
3. \(1:4\)
4. \(1:2\)
Subtopic: Collisions |
62%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
The graph which shows the variation of \(\bigg({\dfrac{1}{\lambda^2}}\bigg)\) and its kinetic energy, \(E\) is (where \(\lambda\) is de-Broglie wavelength of a free particle):
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: De-broglie Wavelength |
52%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
An unpolarised light beam strikes a glass surface at Brewster's angle. Then:
| 1. | the refracted light will be completely polarised. |
| 2. | both the reflected and refracted light will be completely polarised. |
| 3. | the reflected light will be completely polarised but the refracted light will be partially polarised. |
| 4. | the reflected light will be partially polarised. |
Subtopic: Polarization of Light |
59%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
At any instant of time \(t\), the displacement of any particle is given by \(2t-1\) (SI unit) under the influence of force of \(5~\text N\). The value of instantaneous power is (in SI unit):
1. \(5\)
2. \(7\)
3. \(6\)
4. \(10\)
1. \(5\)
2. \(7\)
3. \(6\)
4. \(10\)
Subtopic: Power |
72%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
A tightly wound \(100\) turns coil of radius \(10~\text{cm}\) carries a current of \(7~\text A\). The magnitude of the magnetic field at the centre of the coil is: (Take permeability of free space as \(4 \pi \times 10^{-7}\)SI units):
1. \(4.4~\text T\)
2. \(4.4~\text {mT}\)
3. \(44~\text T\)
4. \(44~\text {mT}\)
1. \(4.4~\text T\)
2. \(4.4~\text {mT}\)
3. \(44~\text T\)
4. \(44~\text {mT}\)
Subtopic: Magnetic Field due to various cases |
66%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
The moment of inertia of a thin rod about an axis passing through its mid point and perpendicular to the rod is \(2400 ~\text{g cm}^2.\) The length of the \(400~\text{g}\) rod is nearly:
| 1. | \(17.5~\text{cm}\) | 2. | \(20.7~\text{cm}\) |
| 3. | \(72.0~\text{cm}\) | 4. | \(8.5~\text{cm}\) |
Subtopic: Moment of Inertia |
57%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
A bob is whirled in a horizontal plane by means of a string with an initial speed of \(\omega\) rpm. The tension in the string is \(T\). If speed becomes \(2\omega\) while keeping the same radius, the tension in the string becomes:
| 1. | \(4 T\) | 2. | \(\dfrac{T}{4}\) |
| 3. | \(\sqrt{2} T\) | 4. | \(T\) |
Subtopic: Uniform Circular Motion |
65%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
Match List-I with List-II.
Choose the correct answer from the options given below:
1. \(\text{A-II, B-I, C-III, D-IV}\)
2. \(\text{A-III, B-II, C-I, D-IV}\)
3. \(\text{A-IV, B-III, C-II, D-I}\)
4. \(\text{A-II, B-III, C-IV, D-I}\)
| List-I (Material) |
List-II (Susceptibility (\(\chi\))) |
||
| \(\mathrm{A.}\) | Diamagnetic | \(\mathrm{I.}\) | \(\chi=0\) |
| \(\mathrm{B.}\) | Ferromagnetic | \(\mathrm{II.}\) | \(0>\chi\geq-1\) |
| \(\mathrm{C.}\) | Paramagnetic | \(\mathrm{III.}\) | \(\chi\gg1\) |
| \(\mathrm{D.}\) | Non-magnetic | \(\mathrm{IV.}\) | \(0<\chi<\varepsilon\) (a small positive number) |
1. \(\text{A-II, B-I, C-III, D-IV}\)
2. \(\text{A-III, B-II, C-I, D-IV}\)
3. \(\text{A-IV, B-III, C-II, D-I}\)
4. \(\text{A-II, B-III, C-IV, D-I}\)
Subtopic: Magnetic Materials |
63%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
In the following circuit, the equivalent capacitance between terminal \(A\) and terminal \(B\) is:
1. \(1~\mu\text F\)
2. \(0.5~\mu\text F\)
3. \(4~\mu\text F\)
4. \(2~\mu\text F\)
1. \(1~\mu\text F\)
2. \(0.5~\mu\text F\)
3. \(4~\mu\text F\)
4. \(2~\mu\text F\)
Subtopic: Combination of Capacitors |
65%
From NCERT
NEET - 2024
Please attempt this question first.
Hints
Please attempt this question first.
© 2024 GoodEd Technologies Pvt. Ltd.