Question

Angular resolving power of human eye is

• A. $3.6\times 10^3$
• B. $3.6\times 10^2$
• C. $3.6\times 10^4$
• D. $3.6\times 10^6$

Answer 1

Answer: (A)

The minimum angular separation between two objects, so the they are just resolved is called resolving limit. For eye it is $1={\left[\frac{1}{60}\right]}^{\circ }.$ Reciprocal of resolving limit is called resolving power (RP)
$=\frac{1}{{\left(\frac{1}{60}\right)}^{\circ }}=\frac{1}{\frac{1}{60}\times \frac{\pi }{180}}$
$=\frac{10800}{\pi }=3.436\times 10^{3}rad$