A light-year is a unit of distance.
The definition of a light-year is the distance light travels in one year.
Using lens equation;
1/o + 1/i = 1/f; where o = Object distance, i = image distance (normally negative), f = focal length (normally negative)
Substituting;
1/o + 1/-30 = 1/-43 => 1/o = -1/43 + 1/30 = 0.01 => o = 1/0.01 = 99.23 cm
Therefore, the object should be place 99.23 cm from the lens.
The one tossed upward on the Moon will rise to a greater maximum height before starting to fall.
It'll also spend more total time in flight before returning to the hand that tossed it. (I almost said that it'll spend "more time in the air". That would be silly on the Moon.)
Answer:
I think your answer would be D
Explanation:
