NEET2004PhysicsRay OpticsActual
A telescope has an objective lens of 10 cm diameter and is situated at a distance of one kilometers from two objects. The minimum distance between these two objects, which can be resolved by the telescope, when the mean wavelength of light is 5000 Å , is of the order of:
Options
- A0.5 ~m
- B5 ~m
- C5 ~mm
- D5 ~cm
Correct answer
C. 5 ~mm
Step-by-step solution
According to the question: array ll = 1.22 a d D = a a^ = D a a = 5000 10⁻¹⁰ 10^3 10 10⁻² =5 ~mm array