Question

please answer this both questions correctly​

Answer 1

answer is given upside

Answer 2

Answer:

A is closer, it is only 200 parsecs away whereas B is 500 parsecs away.

Explanation:

A parsec, about 3.26 light-years, is the distance where a star appears to shift by one second of arc as the Earth moves from one point in its orbit to the opposite point.

dimension of length , l = [L]

dimension of acceleration due to gravity,

g = [LT-²]

$given \: expression \: is \: l\sqrt{\frac{l}{g}}l$

$so, \: dimension \: of \: l\sqrt{\frac{l}{g}}l$

$</h3><h3>=\textbf{dimension of l}\times\sqrt{\frac{\textbf{ dimension of l}}{\textbf{dimension of g}}} \:$

$= [L]\sqrt{\frac{[L]}{[LT^{-2}]}}$

$= [L]\sqrt{[T^2]}[L] \:$

]

$</h3><h3>= [LT] \: \\ </h3><h3></h3><h3>so, \: dimension \: of \: l\sqrt{\frac{l}{g}}l \:$