AP EAMCET · Chemistry · Structure of Atom
The uncertainties in the velocities of two particles \(A\) and \(B\) are 0.05 and \(0.02 \mathrm{~m} / \mathrm{s}^{-1}\) respectively. The mass of \(B\) is five times to that of mass \(A\). What is the ratio of uncertainties \(\left(\frac{\Delta x_A}{\Delta x_B}\right)\) in their positions?
- A 2
- B 0.25
- C 4
- D 1
Answer & Solution
Correct Answer
(A) 2
Step-by-step Solution
Detailed explanation
According to Heisenberg \(\Delta x \times m \times \Delta v=\frac{h}{4 \pi}\) where \(\Delta x=\) uncertainty in position. \(m=\) mass of particle \(\Delta v=\) uncertainty in velocity According to question \(\Delta x_A \times m \times 0.05=\frac{h}{4 \pi}\) \(\ldots(1)\)…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- The mass of hydrogen (in grams) present in \(1.0 \mathrm{~L}\) of pure water of density \(1.0 \mathrm{~g} \mathrm{~cm}^{-3}\) isAP EAMCET 2022 Easy
- Acetic acid on heating with \(\mathrm{NH}_3\) forms \(A\). When \(A\) reacts with \(\mathrm{LiAlH}_4\) followed by hydrolysis gives \(B\). When \(B\) is heated with chloroform in \(\mathrm{KOH}\) medium gives \(C\). What are \(B\) and \(C\) respectively?AP EAMCET 2019 Medium
- Identify statement (s) which is (are) not correct from the following
a) \(\mathrm{NH}_3\) and \(\mathrm{H}_3 \mathrm{O}^{+}\)are isostructural
b) \(\mathrm{ClF}_3\) has T-shape
c) \(\mathrm{O}_2\) molecule is paramagnetic
d) Bond order of \(\mathrm{N}_2{ }^{+}\)is more than \(\mathrm{N}_2\)AP EAMCET 2017 Medium - In thin layer chromatography, a substance moved by a distance of \(4 \mathrm{~cm}\), where as the solvent moved by a distance of \(5 \mathrm{~cm}\). Then the value of retardation factor \(\left(R_f\right)\) isAP EAMCET 2021 Easy
- For \(\mathrm{NaCl}\), the number of Schottky pairs per \(\mathrm{cm}^3\) at room temperature isAP EAMCET 2021 Medium
- Which among the following is most common in alkyl halides?AP EAMCET 2020 Medium
More PYQs from AP EAMCET
- Which element of the \(3 d\)-series has highest third ionisation enthalpy?AP EAMCET 2020 Easy
- If \(\theta\) is the angle between the lines \(x^2+2 h x y+b y^2=0\), then the angle between \(x^2+2 x y \sec \theta+y^2=0\) isAP EAMCET 2021 Easy
- Let \(a, b \in \mathbf{R}-\{0\}\), and \(I_2\) be the identity matrix of order 2. Then the rank of the (block) matrix \(\left[\begin{array}{ll}a I_2 & b_2 \\ a I_2 & b I_2\end{array}\right]\) isAP EAMCET 2020 Easy
- A battery of emf \(10 \mathrm{~V}\) is connected to a uniform wire \(A B\) of \(1 \mathrm{~m}\) length and having a resistance of \(10 \Omega\) in series with a \(10 \Omega\) resistor as shown in the figure. Two cells of emf \(2 \mathrm{~V}\) and \(3 \mathrm{~V}\) having internal resistance \(2 \Omega\) and \(3 \Omega\), respectively are connected as shown in the figure. If the galvanometer shows null deflection at point \(J\) on the wire, then the distance of point \(J\) from the point \(B\) is.
AP EAMCET 2018 Hard - If , then the ratioAP EAMCET 2021 Hard
- If \(A\) is a square matrix of order 3 and \(A^2+A+2 I=0\), thenAP EAMCET 2018 Hard