Question

Lemple 1.2: A star is 5.5 light years away
from the Earth. How much parallax in arcsec
will it subtend when viewed from two opposite point along the orbit of the earth
​

Answer 1

Hello Dear,

◆ Answer -

θ = 2.46×10^-10 rad

◆ Explaination -

# Given -

x = 5.5 ly = 5.2×10^16 m

d = 12.8×10^6 m

# Solution -

Let x be distance between the star & earth and d be earths diameter.

Angle of parallax is given by -

θ = d / x

θ = 12.8×10^6 / 5.2×10^16 m

θ = 2.46×10^-10 rad

Therefore, angle of parallax would be 2.46×10^-10 rad.

Thanks dear...