1
Question
(a) What is least distance of distinct vision for a normal human eye?
(b) With the help of labelled diagram. give the principle and magnifying power of astronomical telescope when final image is formed at least distance of distinct vision.
(b) With the help of labelled diagram. give the principle and magnifying power of astronomical telescope when final image is formed at least distance of distinct vision.
Open in App
Solution
(a)The least distance of distinct vision for a normal human eye is 25cm.
(b) Astronomical Telescope :
An astronomical telescope is an optical instrument which is used to see the magnified image of distant heavenly bodies like stars, planets, satellites, and galaxies etc.
Principle of Astronomical Telescope :
An astronomical telescope works on the principle that when an object to be magnified is placed at a large distance from the objective lens of telescope, a virtual, inverted and magnified image of the object is formed at the least distance of distinct vision from the eye held close to the eyepiece.
(b) Astronomical Telescope :
An astronomical telescope is an optical instrument which is used to see the magnified image of distant heavenly bodies like stars, planets, satellites, and galaxies etc.
Principle of Astronomical Telescope :
An astronomical telescope works on the principle that when an object to be magnified is placed at a large distance from the objective lens of telescope, a virtual, inverted and magnified image of the object is formed at the least distance of distinct vision from the eye held close to the eyepiece.
Suggest Corrections
1
Similar questions
View More
Join BYJU'S Learning Program
Explore more
Join BYJU'S Learning Program
