Question

What is the distance to a star whose parallex is 0.1 sec?

Answer 1

`30.86* 10^(13) km`

Step-by-step explanation:

Given the parallex of the star is 0.1 sec.

The distance is inversely related with the parallex of the star. Mathematically,

`d=(1)/(P)`

Here, d is the distance to a star which is measured in parsecs, and P is the parallex which is measured in arc seconds.

Now,

`d=(1)/(0.1)\\d=10 parsec`

And also know that,

`1 parsec=3.086* 10^(13) km`

Therefore the distance of the star is
`30.86* 10^(13) km` away.