AP EAMCET · PHYSICS · Ray Optics
The limit of resolution of an oil immersion objective microscope of numerical aperture 0.8 for light of wavelength \(0.6 \mu \mathrm{m}\) is
- A \(\frac{1.5}{8} \mu \mathrm{m}\)
- B \(\frac{3}{8} \mu \mathrm{m}\)
- C \(\frac{5}{8} \mu \mathrm{m}\)
- D \(\frac{7}{8} \mu \mathrm{m}\)
Answer & Solution
Correct Answer
(B) \(\frac{3}{8} \mu \mathrm{m}\)
Step-by-step Solution
Detailed explanation
Numerical aperture, \(N A=0.8\) Wavelength, \(\lambda=0.6 \mu \mathrm{m}\) \(\therefore\) Limit of resolution \(=\frac{\lambda}{2 N A}=\frac{0.6}{2 \times 0.8}=\frac{0.3}{0.8}=\frac{3}{8} \mu \mathrm{m}\)
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
- A planet revolving round the Sun in an elliptical orbit, whose semi-major axis is double that of its semi-minor axis. When the Sun is assumed to be at rest at the mid point of semi-major axis, planet takes 24 hours to travel through a path bed as shown in the figure. Then the time taken by the planet to travel along dab is ____
AP EAMCET 2017 Easy - The equivalent capacitance between \(A\) and \(B\) in the given circuit is
AP EAMCET 2021 Medium - A mass \(M\) attached to a horizontal spring executes simple harmonic motion with amplitude \(A_1\). When mass \(M\) passes mean position then a smaller mass \(m\) is attached to it and both of them together executing simple harmonic motion with amplitude \(A_2\). Then the value of \(\frac{A_1}{A_2}\) isAP EAMCET 2024 Easy
- A person walks along a straight road from his house to a market \(2.5 \mathrm{~km}\) away with a speed of \(5 \mathrm{~km} / \mathrm{h}\) and instantly turns back and reaches his house with a speed of \(7.5 \mathrm{~km} / \mathrm{h}\). The average speed of the person during the time interval 0 to \(50 \mathrm{~min}\) is \((\mathrm{in} \mathrm{m} / \mathrm{s})\)AP EAMCET 2014 Easy
- If the ratio of specific heats of a gas at constant pressure and at constant volume is \(\gamma\), then the number of degrees of freedom of the rigid molecules of the gas isAP EAMCET 2025 Medium
- A steel wire of length \(1 \mathrm{~m}\), mass \(0.1 \mathrm{~kg}\) and uniform area of cross section \(10^{-6} \mathrm{~m}^2\) is rigidly fixed at both the ends without any tension. Its temperature is lowered by \(20^{\circ} \mathrm{C}\) and transverse waves are set up by plucking the wire at the middle. The frequency of the fundamental mode is
\[
\left(\mathrm{Y}=200 \mathrm{GPa}, \alpha=1.21 \times 10^{-5}{ }^{\circ} \mathrm{C}^{-1}\right)
\]AP EAMCET 2018 Medium
More PYQs from AP EAMCET
- If \(f: R \rightarrow R\) is defined as \(f(x+y)=f(x)+f(y)\), \(\forall x, y \in R\) and \(f(\mathrm{l})=5\), then find the value of the following \(\sum_{r=1}^n f(r)\) is equal toAP EAMCET 2021 Easy
- If \(\log \sqrt{x^2+y^2}=\tan ^{-1}\left(\frac{x}{y}\right)\), then \(\frac{d y}{d x}\) is equal toAP EAMCET 2020 Medium
- A body of mass \(4.9 \mathrm{~kg}\) hangs from a spring and oscillates with a period \(0.5 \mathrm{~s}\). On the removal of the body, the spring is shortened by (take, \(g=10 \mathrm{~ms}^{-2}, \pi^2=10\) )AP EAMCET 2021 Medium
- If \(\mathrm{P}(\alpha, \beta)\) is the radical centre of the circles \(\mathrm{S} \equiv \mathrm{x}^2+\mathrm{y}^2+4 \mathrm{x}+7=0\), \(S^{\prime} \equiv 2 x^2+2 y^2+3 x+5 y+9=0\) and \(S^{\prime \prime} \equiv x^2+y^2+y=0\), then the length of the tangent drawn from \(P\) to \(S^{\prime}=0\) isAP EAMCET 2025 Medium
- If the dielectric constant of a substance is \(K=\frac{4}{3}\), then the electric susceptibility \(\psi_{\mathrm{e}}\) isAP EAMCET 2015 Easy
- The angular momentum of an electron in a stationary state of \(\mathrm{Li}^{2+}(\mathrm{Z}=3)\) is \(\frac{3 h}{\pi}\). The radius and energy of that stationary state are respectivelyAP EAMCET 2024 Medium