Question

. If the
parallax of a star is 0.28 arc second, the distance of the star from earth is 1
y is

9 1y         10.54 1y     11.64 1y                 14.4 1y

Answer 1

Answer:

The correct option is  11.64 1y.

Explanation:

Parallax angle = 0.28 arc second

Distance = 1 / Parallax

Distance = 1 / 0.28

Distance = 3.57 Parsec

1 Parsec = 3.26 light year

             = 3.57 × 3.26

            = 11.64 light year

• The angle between the Earth at one time of year and the Earth six months later, as measured from a nearby star, is known as the parallax angle.
• This angle is used by astronomers to calculate how far away that star is from Earth.

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