AP EAMCET · PHYSICS · Electromagnetic Waves
According to Moseley's law, the frequency ( \(v)\) of the \(K_\alpha\) line and the atomic number \(Z\) of the element have the relation \((A\) and \(B\) are constants)
- A \(\frac{v}{(Z-A)}=B\)
- B \(\frac{\sqrt{v}}{(Z-A)}=B\)
- C \(v(Z-A)=B\)
- D \(v(Z-A)^2=B\)
Answer & Solution
Correct Answer
(B) \(\frac{\sqrt{v}}{(Z-A)}=B\)
Step-by-step Solution
Detailed explanation
No Solution Available
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 PHYSICS
- Along the \(x\)-axis, three charges \(\frac{q}{2},-q\) and \(\frac{q}{2}\) are placed at \(x=0, x=a\) and \(x=2 a\) respectively. The resultant electric potential at a point \(P\) located at a distance \(r\) from the charge \(-q(a < r)\) is \(\left(\varepsilon_0\right.\) is the permittivity of free space)AP EAMCET 2007 Hard
- A thin lens of refractive index 1.5 has optical power of \(-5 \mathrm{D}\) in air. Its optical power in a liquid medium with refractive index 1.6 is D.AP EAMCET 2021 Medium
- The door of an operating refrigerator is kept open. As a result, the temperature of the room willAP EAMCET 2020 Easy
- A radio receiver antenna that is \(4 \mathrm{~m}\) long is oriented along the direction of the
electromagnetic wave and it receives a signal of intensity \(8 \times 10^{-16} \mathrm{Wm}^{-2}\). The maximum instantaneous potential difference across the two ends of the antenna isAP EAMCET 2021 Medium - In a series LCR circuit, the voltages across the capacitor, resistor and inductor are in the ratio \(2: 3: 6\). If the voltage of the ac source in the circuit is 240 V, then the voltage across the inductor isAP EAMCET 2025 Medium
- A T.V. tower has a height of \(100 \mathrm{~m}\). The average population density around the tower is \(1000 \mathrm{~km}^{-2}\) and radius of the earth is \(6.37 \times 10^6 \mathrm{~m}\). The population covered isAP EAMCET 2020 Easy
More PYQs from AP EAMCET
- A stone is dropped from the top of a tall building and after 2 seconds another stone is thrown vertically downwards with a velocity \(5 \mathrm{~ms}^{-1}\) from the same point. Then the distance from the top of the building at which second stone overtakes the first is ____ \(\left(\mathrm{g}=10 \mathrm{~ms}^{-2}\right)\)AP EAMCET 2017 Medium
- The distance between the centres of similitude of the circles \(x^2+y^2+6 x-8 y+16=0\) and \(x^2+y^2-2 x-2 y+\) \(1=0\) isAP EAMCET 2023 Hard
- If \(\mathbf{P Q}+\mathbf{Q R}=\left(2 \lambda^2-5\right) \mathbf{R P}\) then, \(\lambda\) is equal toAP EAMCET 2021 Medium
- A circle with centre at \((2,4)\) is such that the line \(x+y+2=0\) cuts a chord of length 6 . The radius of the circle isAP EAMCET 2014 Medium
- The suitable reagents for the conversion of methane into methyl iodide areAP EAMCET 2021 Medium
- \([\mathrm{x}]\) represents the greatest integer function.
If \(\lim _{x \rightarrow 0^{+}} \frac{\cos [x]-\cos (k x-[x])}{x^2}=5\) then \(k=\)AP EAMCET 2025 Hard