In an astronomical telescope, the distance between the objective and the eyepiece is called
Correct answer: C. Length of the telescope
- A. Magnifying Power of the telescope
- B. Width of the telescope
- C. Length of the telescope
- D. Height of the telescope
Explanation
The tube length g is the distance between the secondary focal point of the objective and the primary focal point of the eyepiece. The intermediate image serves as the object for the eyepiece.
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
A real image formed by convex lenses is always:
The color of light which deviates least in a prism is:
The phenomenon by which light travels in an optical fiber is:
If incident ray MP and reflected ray QN are parallel to each other, find the angle θ between the mirrors.
A crow is sitting on a branch of a tree. On the ground surface, wheat grains are spread. The crow flies towards the ground, picks up a grain and sits on the front wall. The possible paths are shown in the diagram. Choose the correct path so that path length becomes minimum. Given that BD = DE, ∠AFB =∠ EFC.
The setup shown in the Fig the two slits, S1 and S2 are not equidistant from the slit S. The central fringe at O is then: