TS EAMCET · Chemistry · Structure of Atom
The approximate ratio of the speed of light in vacuum to that of an electron in the first Bohr orbit of hydrogen atom is
- A 100 : 1
- B 137 : 1
- C 157 : 1
- D 191 : 1
Answer & Solution
Correct Answer
(B) 137 : 1
Step-by-step Solution
Detailed explanation
From Bohr's atomic model \[ \mathrm{mvr}=\frac{\mathrm{nh}}{2 \pi} \] or, \(\quad \mathrm{v}=\frac{\mathrm{nh}}{2 \pi \mathrm{mr}}\) when \(\mathrm{n}=1, \mathrm{~h}=6.626 \times 10^{-31} \mathrm{~J}-\mathrm{s}, \mathrm{m}=9.11 \times 10^{-31} \mathrm{~kg}, \mathrm{r}=\)…
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
- Which of the following orders is correct for the property given?TS EAMCET 2024 Easy
- Which pair of oxyacids of phosphorus contains ' \(\mathrm{P}-\mathrm{H}\) ' bonds?TS EAMCET 2009 Medium
- Compound \(X\) is anhydride of sulphuric acid. The number of \(\sigma\)-bonds and the number of \(\pi\)-bonds present in \(X\) are, respectively :TS EAMCET 2003 Easy
- Which of the options correctly represent the basicity for these compounds?
TS EAMCET 2018 Easy - The alloy formed by beryllium with ' X ' is used in the preparation of high strength springs. ' X ' isTS EAMCET 2024 Medium
- The IUPAC name of
TS EAMCET 2008 Easy
More PYQs from TS EAMCET
- In an equilateral triangle isTS EAMCET 2021 Easy
- In \(\triangle A B C\) the mid points of the sides \(A B, B C\) and \(C A\) are respectively \((l, 0,0),(0, m, 0)\) and \((0,0, n)\). Then, \(\frac{A B^2+B C^2+C A^2}{l^2+m^2+n^2}\) is equal toTS EAMCET 2008 Hard
- \(\int\left(\frac{1-\log x}{1+(\log x)^2}\right)^2 d x=\)TS EAMCET 2025 Medium
- For \(l \in \mathbf{R}\), the equation \((2 l-3) x^2+2 l x y-y^2=0\) represents a pair of linesTS EAMCET 2020 Easy
- \(\lim _{x \rightarrow 0} \frac{\tan ^3 x-\sin ^3 x}{x^5}\) is equal toTS EAMCET 2013 Medium
- If \(\int e^{\sin ^2 x}\left(\sin x \cos x+\cos ^3 x \sin x\right) d x\) \(=e^{\sin ^2 x}(1+f(x))+c\), then \(f^{\prime}(x)=\)TS EAMCET 2020 Medium