Question
Physics Question on Ray optics and optical instruments
A telescope has an objective lens of 10 cm diameter and is situated at a distance of one kilometer 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
A
5 m
B
5 mm
C
5 cm
D
0.5 m
Answer
5 mm
Explanation
Solution
The minimum distance between two objects that can be resolved by a telescope with a 10 cm diameter objective lens situated at a distance of one kilometer, when the mean wavelength of light is 5000 Å, is of the order of 5 cm.