AP EAMCET · PHYSICS · Ray Optics
The two lenses of an achromatic doublet should have
- A equal powers
- B equal dispersive powers
- C equal ratio of their power and dispersive
power - D sum of the product of their powers and
dispersive power equal to zero
Answer & Solution
Correct Answer
(C) equal ratio of their power and dispersive
power
Step-by-step Solution
Detailed explanation
The two lenses of an achromatic doublet should have, sum of the product of their powers and dispersive power equal to zero.
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
- Which of the following statement is correct regarding \(p-V\) graph?
1. Slope of \(p-V\) graph in an isothermal process is \(-\frac{p}{V}\).
2. Slope of \(p-V\) graph in an adiabatic process is \(-\frac{p}{V}\).
3. Slope of \(p-V\) graph in an isochoric process is \(-\frac{\gamma p}{V}\).
4. Slope of \(p-V\) graph in an isobaric process is zero.AP EAMCET 2019 Easy - If a unit positive charge is taken from one point to another over an equipotential surface, thenAP EAMCET 2020 Easy
- A circular coil of radius \(9 \mathrm{~cm}\) carrying a current of \(2 \mathrm{~A}\) is free to rotate about an axis in its plane perpendicular to an external magnetic field of \(\pi \times 10^{-2} \mathrm{~T}\). When the coil is turned slightly and released, it oscillates about its stable equilibrium with a time period of \(\frac{1}{3} \mathrm{~s}\). If the moment of inertia of the coil about its axis of rotation is \(9 \times 10^{-5} \mathrm{kgm}^2\), the number of turns of the coil is ____AP EAMCET 2017 Hard
- In the arrangement shown in the figure, the coefficient of friction between two blocks is 0.5. The force of friction between the two blocks is (Assume that the \(4 \mathrm{~kg}\) block is placed on a smooth horizontal surface.) (Acceleration due to gravity \(=10 \mathrm{~ms}^{-2}\).)
AP EAMCET 2019 Medium - Three blocks of masses \(700 \mathrm{~g}, 500 \mathrm{~g}\) and \(400 \mathrm{~g}\) suspended at the end of a spring as shown in the figure, are in equilibrium.

When the \(700 \mathrm{~g}\) block is removed, the system has a period of oscillations of \(3 \mathrm{~s}\). If both \(700 \mathrm{~g}\) and \(500 \mathrm{~g}\) blocks are removed, the period of oscillation becomesAP EAMCET 2020 Hard - If the angles of dip at two places are \(30^{\circ}\) and \(45^{\circ}\) respectively, then the ratio of horizontal components of earth's magnetic field at the two places will beAP EAMCET 2020 Easy
More PYQs from AP EAMCET
- \(\int \frac{6 x+5}{\sqrt{6+x-2 x^2}} d x=\)AP EAMCET 2017 Hard
- What is the density of one mole of \(\mathrm{He}\) (molar mass \(=4 \mathrm{~g}\) \(\left.\mathrm{mol}^{-1}\right)\) at \(300 \mathrm{~K}\) and a pressure of \(0.82 \mathrm{~atm} ?(\mathrm{R}=0.082 \mathrm{~L}\) \(\left.\operatorname{atm} \mathrm{mol}^{-1} \mathrm{~K}^{-1}\right)\)AP EAMCET 2022 Medium
- Aluminum carbide on reaction with \(\mathrm{D}_2 \mathrm{O}\) gives \(\mathrm{Al}(\mathrm{OD})_3\) and ' X '. What is ' X '?AP EAMCET 2024 Easy
- The angle between the tangents drawn from a point \((4,3)\) to the circle \(x^2+y^2-2 x-4 y=0\) isAP EAMCET 2017 Medium
- \(\int_{-\pi}^\pi x^2(\sin x) d x=\)AP EAMCET 2020 Easy
- Solve the following differential equation
\[
\left(x^2+1\right) \frac{d y}{d x}+4 x y=\frac{1}{x^2+1}
\]AP EAMCET 2021 Easy