Question

Assume that light of wavelength 6000A is coming from a star. What is the limit of resolution of a telescope whose objective has a diameter of 100 inch?

Answer 1

Answer:

θ=0.0288 radian

Explanation:

resolution limit is the minimum angular separation of  two sources that can be viewed  distinctly    by telescope

$\theta =\frac{1.22\times \lambda}{D}$

$\lambda=6000\times 10^{-8} cm=6 \times 10^{-5} cm$

$d=100 inch=100\times 2.54=254cm$

$\theta = \frac{1.22 \times 6 \times 10^{-5}}{254}$

θ=0.0288 radian