AP EAMCET · PHYSICS · Ray Optics
An infinitely long rod lies along the axis of a concave mirror of focal length \(f\). The nearer end of the rod is at a distance \(u,(u>f)\) from the mirror. Its image will have a length
- A \(\frac{u f}{u+f}\)
- B \(\frac{u f}{u-f}\)
- C \(\frac{f^2}{u+f}\)
- D \(\frac{f^2}{u-f}\)
Answer & Solution
Correct Answer
(D) \(\frac{f^2}{u-f}\)
Step-by-step Solution
Detailed explanation
Using mirror formula, \(\frac{1}{f}=\frac{1}{u}+\frac{1}{v}\) or, \(\frac{-1}{f}=\frac{-1}{u}+\frac{1}{v}[\therefore \mathrm{u} \& \mathrm{f}\) negative for concave mirror…
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
- The work function of a metal is \(2 \mathrm{eV}\). If a radiation of wavelength \(3000 Ã…\) is incident on it, the maximum kinetic energy of the emitted photoelectrons is (Planck's constant \(h=6.6 \times 10^{-34} \mathrm{Js}\); velocity of light \(\left.c=3 \times 10^8 \mathrm{~m} / \mathrm{s} ; 1 \mathrm{eV}=1.6 \times 10^{-19} \mathrm{~J}\right)\)AP EAMCET 2013 Medium
- An inductor is connected to an ac source of frequency 50 \(\mathrm{Hz}\). The frequency of the instantaneous power developed in the circuit isAP EAMCET 2023 Medium
- In the cyclic process given in the \(\mathrm{P}-\mathrm{V}\) diagram, the work done is
AP EAMCET 2023 Easy - The area of cross-section of a copper wire is \(4 \times 10^{-7} \mathrm{~m}^2\) and the electrons per cubic metre in copper is \(8 \times 10^{28}\). If the wire carries a current of 6.4 A, then the drift velocity of the electrons (in \(10^{-3} \mathrm{~m} \mathrm{~s}^{-1}\) ) isAP EAMCET 2025 Medium
- If the wavelengths of maximum intensity of radiation emitted by two black bodies \(A\) and \(B\) are \(0.5 \mu \mathrm{~m}\) and 0.1 mm respectively, then ratio of the temperatures of the bodies A and B isAP EAMCET 2025 Easy
- If the half-life of a radioactive element is 12.5 hours, then the time taken to disintegrate 256 g of the substance into 1 g is (in hours)AP EAMCET 2025 Medium
More PYQs from AP EAMCET
- Let \(1, \omega\) and \(\omega^2\) be the cube roots of unity. If \(\mathrm{S}\) is the set of all non-singular matrices of the form \(\left[\begin{array}{rrr}1 & a & b \\ \omega & 1 & c \\ \omega^2 & \omega & 1\end{array}\right]\) where \(a, b, c \in\left\{\omega, \omega^2\right\}\), then the number of elements in \(\mathrm{S}\) isAP EAMCET 2018 Medium
- When a convex lens is immersed in a liquid of refractive index equal to \(80 \%\) of the refractive index of the material of the lens, the focal length of the lens increases by \(100 \%\). The refractive index of the liquid isAP EAMCET 2024 Medium
- The two reactions involved in the conversion of benzene diazonium chloride to diphenyl are respectivelyAP EAMCET 2024 Hard
- In triangle \(A B C, \frac{\tan A}{2}=\frac{\tan B}{3}=\frac{\tan C}{4}\), then the value of \(\sec ^2 A+\sec ^2 B+\sec ^2 C=\)AP EAMCET 2020 Medium
- For the parabola \(y^2+6 y-2 x+5=0\)
(I) The vertex is \((-2,-3)\)
(II) The directrix is \(y+3=0\)
Which of the following is correct?AP EAMCET 2007 Medium - The ratio of effective number of atoms in a unit cell of fcc and bcc lattices isAP EAMCET 2022 Easy