NEET · Physics · STD 12 - 9. Ray optics and optical instruments
A lens of large focal length and large aperture is best suited as an objective of an astronomical telescope since :
- A a large aperture contributes to the quality and visibility of the images.
- B a large area of the objective ensures better light gathering power.
- C a large aperture provides a better resolution.
- D all of the above.
Answer & Solution
Correct Answer
(D) all of the above.
Step-by-step Solution
Detailed explanation
\(\mathrm{MP}=\frac{\mathrm{f}_{0}}{\mathrm{f}_{\mathrm{e}}}\) \(\text { R.P. }=\frac{\mathrm{a}}{1.22 \lambda}\)
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