The minimum distance between an object and its real image in a convex lens is:
Correct answer: A. 2f
- A. 2f
- B. 2.5f:
- C. 3f:
- D. 4f:
Explanation
Explanation: For a convex lens, the minimum distance between an object and its real image occurs when the object is placed at twice the focal length (2f) from the lens.When an object is placed at twice the focal length from a convex lens, the image formed is actually at twice the focal length on the opposite side of the lens. In this case, the image is real, inverted, and of the same size as the object.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Optics
Light is studied through reflection, refraction, dispersion, interference, diffraction and polarization, linking ray behavior with its wave nature. Questions may involve mirrors, lenses, optical instruments, refractive index and image formation, while geometrical optics deals with rays and wave optics explains effects such as interference and diffraction.
Practise Optics
665 free Optics MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 11 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Optics questions
If a lens is covered with wax, then:
A thin symmetric double convex lens of power P is cut into three parts A, B, and C as shown. The power of:
Typical fiber optic communication system uses light of which wavelength
If the length of a telescope is 96 cm, the focal lengths of its lenses are:
Magnifying power of a simple microscope:
The magnifying power of a compound microscope increases when: