Answer:
0.6 m
Explanation:
We can solve the problem by using the lens equation:
[tex]\frac{1}{f}=\frac{1}{p}+\frac{1}{q}[/tex]
where
f is the focal length
p is the distance between the lens and the candle
q is the distance between the image and the lens
In this problem, we have
p = 1.2 m is the distance of the candle from the lens
f = 0.4 m is the focal length
Solving the equation for q, we find
[tex]\frac{1}{q}=\frac{1}{f}-\frac{1}{p}=\frac{1}{0.4 m}-\frac{1}{1.2 m}=1.67 m^{-1}\\q=\frac{1}{1.67 m^{-1}}=0.6 m[/tex]
