Question

question 7 if a stars apparent magnitude is -1 & its absolute magnitude is +2, the star is farther from earth than 10 parsecs. true false

Explanation:

The relationship between apparent magnitude ($m$), absolute magnitude ($M$), and distance ($d$ in parsecs) is given by the distance - modulus formula $m - M=5\log_{10}(d/10)$. Here, $m=- 1$ and $M = 2$, so $m - M=-1 - 2=-3$. Then $-3 = 5\log_{10}(d/10)$. Solving for $d$ gives $d<10$ parsecs. So the statement is false.

Answer:

False