Question

A particular bird’s eye can just distinguish objects that subtend an angle no smaller than about 4.0x10^-4 rads.

Answer 1

Answer:

Part a)

Angle in degree is given as

$\theta = 0.023 ^o$

Part b)

Size of the object is

$Length = 0.064 m$

Explanation:

Part a)

As we know that

180 degree = $\pi$ radian

so we have

$\theta = 4.0 \times 10^{-4} rad$

so we have

$\theta = 4.0 \times 10^{-4} \times \frac{180}{\pi}$

$\theta = 0.023 ^o$

Part b)

As we know that the relation of angle with radius is

$\theta = \frac{arc}{radius}$

$4 \times 10^{-4} = \frac{Length}{160}$

$Length = 0.064 m$