Question

PLEASE SOLVE THIS IT'S URGENT PLEASE DON'T SPAM please​

Answer 1

Answer:

answer is -10 as the object is always placed on the LHS of a mirror so the SIGN is NEGATIVE and

we know,

magnification= - image distance / object distance

magnification and image distance is given so we substitute the values

let the object distance be X

3 = -30/ X

X = -30/3

X= -10