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)
$=\frac{1}{\left(\frac{1}{60}\right)^{\circ}}=\frac{1}{\frac{1}{60} \times \frac{\pi}{180}}$
$=\frac{10800}{\pi}=3.436 \times 10^{3} rad$