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)

$3.6 \times 10^3$

Answer 2

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