Physics · 2016
NEET 2016 · 1 May · Code Y · Q112
A astronomical telescope has objective and eyepiece of focal lengths 40 cm and 4 cm respectively. To view an object 200 cm away from the objective,…
A astronomical telescope has objective and eyepiece of focal lengths $\displaystyle 40$ cm and $\displaystyle 4$ cm respectively. To view an object $\displaystyle 200$ cm away from the objective, the lenses must be separated by a distance :
Official answer
From NTA’s final answer key for this paper.
(1)
54.$\displaystyle 0$ cm
More from Ray Optics and Optical Instruments
- In the figure shown here, what is the equivalent focal length of the combination of lenses (Assume that all layers are thin)?2023
- Assume that light of wavelength 600 nm is coming from a star. The limit of resolution of telescope whose objective has a diameter of 2 m is:2020
- Two transparent media A and B are separated by a plane boundary. The speed of light in those media are 1.5 × 10^8 m / s and 2.0 × 10^8 m / s,…2022
- A thin prism having refracting angle 10° is made of glass of refractive index 1.42. This prism is combined with another thin prism of glass of…2017
- Two identical glass (μ_g=3 / 2) equiconvex lenses of focal length f each are kept in contact. The space between the two lenses is filled with water (…2016
- Two similar thin equi-convex lenses, of focal length f each, are kept coaxially in contact with each other such that the focal length of the…2019
- A convex lens 'A' of focal length 20 cm and a concave lens 'B' of focal length 5 cm are kept along the same axis with a distance 'd' between them. If…2021
- A lens of large focal length and large aperture is best suited as an objective of an astronomical telescope since:2021
NEET (UG) 2016 Physics question, with the answer from NTA’s final answer key. Where our answers come from.