An object is placed at 30 cm in front of the convex lens of focal length 10 cm. Find out the image distance from lens?
Step 1: Given that:
Object distance(u) = −30cm
Focal length(f) of convex lens= +10cm
Step 2: Calculation of image distance:
Using lens formula; 1v−1u=1f
Where u = Object distance
v= Image distance
f = Focal length of the lens
Putting all the values we get;
Option c) +15cm is the correct option.