Answer:
The total magnification of a refracting telescope is -75
Explanation:
f₀ = 30 cm
[tex]f_{e}[/tex] = 0.40 cm
Magnification in telescope => m = - f₀ / [tex]f_{e}[/tex]
m = - 30 / 0.040
m = -75
Magnification in telescope = -75
The negative sign shows the image is inverted