The graph which shows the correct variation of \(\dfrac{1}{v}\) with \(\dfrac{1}{u}\) for a concave mirror, where \(u\) is the object distance and \(v\) is the image distance, is:
1. 2.
3. 4.

Subtopic:  Reflection at Spherical Surface |
 53%
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NEET - 2024
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Identify the correct statements about genetic codons. 
A. AUG is initiator codon and codes for Glycine 
B. UAA codes for Tyrosine 
C. The codons are mostly universal 
D. UAG is terminator codon
E. More than one codon code for single amino acid
1. C, B, D 2. A, D, E
3. C, D, E 4. A, B, C 
Subtopic:  Genetic Code |
 79%
From NCERT
NEET - 2024

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Consider the reaction in equilibrium 
\(\mathrm{PCl}_5=\mathrm{PCl}_3+\mathrm{Cl}_2\)
at \(500 \mathrm{~K} .\) The concentration of \(\mathrm{PCl}_5=1.40~ \mathrm{M} \text {, }\) concentration of \(\mathrm{Cl}_2=1.60~ \mathrm{M} \text {, }\) concentration of \(\mathrm{PCl}_3=1.60 \mathrm{M}\). Calculate \(K_c\):

1. 2.00
2. 2.6
3. 1.83
4. 3.4
Subtopic:  Kp, Kc & Factors Affecting them |
 89%
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Which input \((A,B)-\)output \((Y)\) combination correctly represents the given logic circuit?
                 
1. \(A=1,B=1,Y=1\)
2. \(A=0,B=1,Y=1\)
3. \(A=1,B=0,Y=0\)
4. \(A=0,B=0,Y=1\)
Subtopic:  Logic gates |
 59%
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A wire of length \(L\) and radius \(r(r\ll L)\) is kept floating on the surface of a liquid of density \(\rho.\) The maximum radius of the wire for which it may not sink is:
(the surface tension of liquid is \(T\))
1. \(\sqrt { \dfrac{T}{\rho g}}\) 2. \(\sqrt { \dfrac{2T}{\rho g}}\)
3. \(\sqrt{\dfrac{2T\rho}{\pi g}}\) 4. \(\sqrt{\dfrac{2T} {\pi \rho g}}\)
Subtopic:  Surface Tension |
 61%
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NEET - 2024
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A rocket is fired vertically upward with a speed of \(\dfrac{v_e}{\sqrt2}\) from the Earth's surface, where \(v_e\) is escape velocity on the surface of Earth. The distance from the surface of Earth upto which the rocket can go before returning to the Earth is:
(given, the radius of Earth \(=6400~\text{km}\) )
1. \(1600~\text{km}\)
2. \(3200~\text{km}\)
3. \(6400~\text{km}\)
4. \(12800~\text{km}\)
Subtopic:  Escape velocity |
 65%
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NEET - 2024
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Phenanthrene is an aromatic compound and follows Huckel's \((4 n+2) \pi\) electron rule. The value of \(n\) is:
   
1. 0
2. 1
3. 2
4. 3
Subtopic:  Aromatic Hydrocarbons - Nomenclature, Isomerism & Huckel's Rule |
 82%
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Match List-I with List-II (the symbols carry their usual meaning).
List-I List-II
A. \( \oint \vec{E} \cdot d \vec{A}=\dfrac{Q}{\varepsilon_0}\) I. Ampere-Maxwell's law
B. \( \oint \vec{B} \cdot d \vec{A}=0 \) II. Faraday's law
C. \( \oint \vec{E} \cdot d\vec{ l}=\dfrac{-d(\phi)}{d t} \) III. Gauss's law of electrostatics
D. \( \oint \vec{B} \cdot d\vec{l}=\mu_0 i_c+ \mu_0 \varepsilon_0 \dfrac{d\left(\phi_E\right)}{d t}\) IV. Gauss's law of magnetism
Choose the correct answer from the options given below:
1. A-III, B-IV, C-II, D-I 2. A-IV, B-III, C-II, D-I
3. A-III, B-II, C-IV, D-I 4. A-IV, B-I, C-III, D-II
Subtopic:  Maxwell's Equations |
 83%
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NEET - 2024
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Match List-I with List-II
List-I List-II
A C4 Pathway I. \(2\text{H}_2\text{O}\rightarrow4\text{H}^++\text{O}_2=4\text{e}^-\)
B. Light reaction II. Ribulose 1,5-bisphosphate
C. Photorespiration III. -carbon molecule phosphoenol
D.  Calvin cycle   IV.  Phosphoglycolate
Choose the correct answer from the options given below:
1. A-II, B-I, C-IV, D-III
2. A-IV, B-II, C-I, D-III
3. A-III, B-I, C-IV, D-II
4. A-III, B-IV, C-II, D-I
Subtopic:  Photosystems | Dark Reaction : Calvin Cycle | C4 Cycle (Hatch & Slack Pathway) | Photorespiration |
 81%
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NEET - 2024
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An ideal gas at \(0^{\circ}\text{C}\) and atmospheric pressure \(P\) has volume \(V.\) The percentage increase in its temperature needed to expand it to \(3V\) at constant pressure is:
1. \(100\%\) 2. \(200\%\)
3. \(300\%\) 4. \(50\%\)
Subtopic:  Ideal Gas Equation |
 71%
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NEET - 2024
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