Question
Download Solution PDFWhich statement is correct about telescope:
a) The focal length of the objective lens is more than the eyepiece.
b) The focal length of the eyepiece is more than the objective lens.
c) The aperture of the objective lens is more than the eyepiece.
d) The aperture of the eyepiece is more than the objective lens.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
Telescope:
- A telescope is an optical device that is used to see distant objects clearly.
- It provides the angular magnification of distant objects.
- The telescope consists of a long cylindrical tube carrying a convex lens of large focal length and large aperture at one end and a convex lens of small focal length and a small aperture to the other end.
- The lens of the large focal length is kept towards the object and is called the objective lens.
- The lens of a small focal length is kept towards the eye and is called the eyepiece.
EXPLANATION:
- From the above, it is clear that the focal length of the objective lens is more than the eyepiece. Therefore statement a is correct.
- The aperture of the objective lens is more than the eyepiece. Therefore statement c is correct.
- Hence, option 1 is correct.
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