Here R⋅P.=Δθ1 ∴ Angular resolution Δθ=D1.22λ=0.11.22×5000×10−10=6.10×10−6≅10−6
The angular resolution of a 10 ~cm diameter telescope at a wavelength of 5000 Å is of the order of:
NEET UG 2005 — Physics Optics
2005mcqmedium
The angular resolution of a 10 cm diameter telescope at a wavelength of 5000A˚ is of the order of:
Official previous-year question
Held on 30 Apr 2005 · Verified 9 Jul 2026.
Options
- A
106rad
- B
10−2rad
- C
10−4rad
- D
10−6rad
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