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Subjects
Science TNSB Mentoring
Class 10
Optics
Working and Defects of the human eye
5.
Telescope and its types
Question:
2
m.
Choose the correct answer for the given question from the options:
1.
Which lens is used in the objective of an astronomical telescope?
Concave lens
Culindrical lens
Plano concave lens
Convex lens
2.
Which of the following is used to erect the image in a terrestrial telescope?
Erecting lens
Plane mirror
Concave mirror
Prism
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