AP EAMCET · PHYSICS · Ray Optics
A convex lens has its radii of curvature equal. The focal length of the lens is \(f\). If it is divided vertically into two identical plano-convex lenses by cutting it, then the focal length of the plano-convex lens is ( \(\mu=\) the refractive index of the material of the lens)
- A \(f\)
- B \(\frac{f}{2}\)
- C \(2 f\)
- D \((\mu-1) f\)
Answer & Solution
Correct Answer
(C) \(2 f\)
Step-by-step Solution
Detailed explanation
The given, \(R_1=R, R_2=-R\) \[ f=F \] Lens Maker's formula \[ \begin{aligned} \frac{1}{F} & =(\mu-1)\left[\frac{1}{R_1}-\frac{1}{R_2}\right] \\ \frac{1}{f} & =(\mu-1)\left[\frac{1}{R}+\frac{1}{R}\right] \\ f & =\frac{R}{2(\mu-1)} \\ R & =2 f(\mu-1) \end{aligned} \] Now, it is…
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 capillary tube of radius \(0.1 \mathrm{~mm}\) is dipped in water. The water rises to a height of \(2 \mathrm{~cm}\) in the tube. If the surface tension of water is \(0.072 \mathrm{Nm}^{-1}\), the contact angle between water and wall of the tube isAP EAMCET 2023 Medium
- A car moving with a certain velocity, jumps from an inclined plane placed at one bank of a river and reaches the other bank by attained a maximum height of \(80 \mathrm{~m}\). If the same car, moving with the same velocity jumps from another inclined plane having different angle of inclination and reaches the same point on the other bank by attaining maximum height of \(45 \mathrm{~m}\), then the width of the river isAP EAMCET 2019 Hard
- For 1 mole of an ideal gas, during an adiabatic process, the square of the pressure of a gas is found to be proportional to the cube of its absolute temperature. The specific heat of the gas at constant volume is (\(\mathrm{R}\) is universal gas constant)AP EAMCET 2017 Easy
- In the figure, if A & B are identical bulbs, which bulb glows brighter
AP EAMCET 2024 Easy - Three thin uniform rods each of mass M and length L are placed along the three axes of a cartesian coordinate system with one end of all the rods at origin. The moment of inertia of the system of the rods about z -axis isAP EAMCET 2025 Medium
- Bernoulli's theorem is based on the conservation ofAP EAMCET 2021 Easy
More PYQs from AP EAMCET
- Which of the following statements are correct?
I. Binding of inhibitor at allosteric site changes the shape of the active site.
II. Shape of the receptor does not change after attachment of chemical messenger to it.
III. A chemical messenger gives message to the cell by entering it.
IV. Erythromycin is an example of bacteriostatic antibiotic.AP EAMCET 2019 Easy - Find the number of ways of arrangement 6 red balls and 6 black balls in a row such that no two black ball are together.AP EAMCET 2020 Easy
- Which of the following set of elements do not possess \(f\)-electrons?AP EAMCET 2019 Easy
- If the equation of one asymptote of the hyperbola \(14 x^2+38 x y+20 y^2+x-7 y-91=0\) is \(7 x+5 y-3=0\), then the other asymptote isAP EAMCET 2018 Easy
- Sodium nitrite is reacted with to form water and . Gold is dissolved in aqua regia to form water, and and are respectivelyAP EAMCET 2019 Medium
- Which of the following pairs of solutions is expected to be isotonic at same temperature?AP EAMCET 2020 Easy