If \(\vec{E}\) and \(\vec{B}\) represent the electric field vector and magnetic field vector, respectively, in an electromagnetic wave then the direction of EM wave is along:
1.
\(\vec{E}\)
2.
\(\vec{B}\)
3.
\(\vec{E}\times\vec{B}\)
4.
\(\vec{B}\times\vec{E}\)
Subtopic: Properties of EM Waves |
91%
Level 1: 80%+
NEET - 2024
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Given below are two statements:
In light of the above statements, choose the correct answer from the options given below.
1. Both Statement I and Statement II are True
2. Both Statement I and Statement II are False
3. Statement I is True but Statement II is False
4. Statement I is False but Statement II is True
| Statement I: | Two DNA sequences were prepared corresponding to A and B, chains of human insulin and were introduced in the plasmids of Agrobacterium to produce insulin chain. |
| Statement II: | Chain A and B were produced separately, extracted and combined by creating disulphide bonds to form human insulin. |
1. Both Statement I and Statement II are True
2. Both Statement I and Statement II are False
3. Statement I is True but Statement II is False
4. Statement I is False but Statement II is True
Subtopic: Med Applications & Humulin |
60%
Level 2: 60%+
NEET - 2024
Hints
Two identical rectangular plane sheet \(A\) and \(B\) each of surface charge density \(\varepsilon_0~ \text{Cm}^{-2}\) are placed parallel to each other as shown in figure. The electric field at the mid point \(P\) will be:
| 1. | \(2 ~\text{NC}^{-1}\) | 2. | \(1~\text{NC}^{-1}\) |
| 3. | \(0.5~\text{NC}^{-1}\) | 4. | zero |
Subtopic: Electric Field |
79%
Level 2: 60%+
NEET - 2024
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Radiation of wavelength \(280~\text{nm}\) is used in an experiment of photoelectric effect with cathode of work function, \(2.5~\text{eV}.\) The maximum kinetic energy of the photoelectrons is:
(take \(h=6.62\times10^{-34}~\text{J s}\) and \(c=3\times10^{8}~\text{ms}^{-1}\))
(take \(h=6.62\times10^{-34}~\text{J s}\) and \(c=3\times10^{8}~\text{ms}^{-1}\))
| 1. | \(4.4~\text{eV}\) | 2. | \(7.103\times10^{-15}~\text{J}\) |
| 3. | \(1.9~\text{eV}\) | 4. | \(4.60~\text{eV}\) |
Subtopic: Einstein's Photoelectric Equation |
74%
Level 2: 60%+
NEET - 2024
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The junction between ovule and funicle is represented by :
| 1. | Nucellus | 2. | Integument |
| 3. | Chalaza | 4. | Hilum |
Subtopic: Pistil: Ovule |
93%
Level 1: 80%+
NEET - 2024
Hints
Match List-I with List-II relating to major features of embryonic development at different timings of pregnancy:
Choose the correct answer from the options given below:
| List-I (No. of weeks) |
List-II (Major features) |
||
| A. | After 4 weeks of pregnancy | I. | Eye-lids separate and eyelashes are formed |
| B. | After 12 weeks of pregnancy | II. | Heart is formed |
| C. | After 24 weeks of pregnancy | III. | Limbs and digits are developed |
| D. | After 8 weeks of pregnancy | IV. | External genital organs are well developed |
| 1. | A-III, B-IV, C-I, D-II | 2. | A-II, B-I, C-III, D-IV |
| 3. | A-II, B-IV, C-I, D-III | 4. | A-III, B-IV, C-II, D-I |
Subtopic: Embryonic Development till Gastrulation | Fetal Development & Parturition |
81%
Level 1: 80%+
NEET - 2024
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For a prism, when the light undergoes minimum deviation, the relationship between the angle of incidence \((i)\) and the angle of emergence \((i')\) is:
| 1. | \(i=i'\) | 2. | \(i>i'\) |
| 3. | \(i<i'\) | 4. | \(i=0\) |
Subtopic: Prisms |
81%
Level 1: 80%+
NEET - 2024
Hints
Given below are two statements:
In the light of the above statements, choose the correct answer from the options given below:
| Assertion (A): | A glass tube partially filled with water represents an open organ pipe. |
| Reason (R): | The open end corresponds to an antinode and the end in contact with water, to a node. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True and (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Standing Waves |
67%
Level 2: 60%+
NEET - 2024
Hints
The photochemical phase of photosynthesis include:
Choose the correct answer from the options given below:
| A. | Oxygen release | B. | Formation of NADPH |
| C. | Use of ATP | D. | Water splitting |
| E. | Carboxylation | ||
| 1. | C and E only | 2. | A, B and D only |
| 3. | B, C and E only | 4. | A, B, C and D only |
Subtopic: Light Reaction: Electron Transport |
62%
Level 2: 60%+
NEET - 2024
Hints
Match List-I with List-II:
(Here symbols have their usual meaning and \(R\) is the radius of the thin shell)
Choose the correct answer from the options given below:
| List-I (Application of Gauss Law) |
List-II (Value of \(|E|\)) |
||
| \(\mathrm{(A)}\) | The field inside a thin shell | \(\mathrm{(I)}\) | \( \dfrac{\lambda}{2 \pi \varepsilon_0 r} \hat{n} \) |
| \(\mathrm{(B)}\) | The field outside a thin shell | \(\mathrm{(II)}\) | \( \dfrac{q}{4 \pi \varepsilon_0 R^2} \hat{r} \) |
| \(\mathrm{(C)}\) | The field of thin shell at the surface | \(\mathrm{(III)}\) | \( \dfrac{q}{4 \pi \varepsilon_0 r^2} \hat{r}\) |
| \(\mathrm{(D)}\) | The field due to a long charged wire | \(\mathrm{(IV)}\) | zero |
Choose the correct answer from the options given below:
| 1. | \(\mathrm{A-IV, B-III, C-I, D-II}\) |
| 2. | \(\mathrm{A-I, B-II, C-III, D-IV}\) |
| 3. | \(\mathrm{A-IV, B-III, C-II, D-I}\) |
| 4. | \(\mathrm{A-I, B-III, C-II, D-IV}\) |
Subtopic: Gauss's Law |
86%
Level 1: 80%+
NEET - 2024
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