Question

What will be the sign convention for magnufication(m) for a real image of :
1. Convex lens
2. Concave lens
3. Convex mirror
4. Concave mirror
Plssssss answer faaaast

Answer 1

for convex lens and mirror = +

for concave lens and mirror = -

Answer 2

Convex mirror = m=-v/u and as same as convex mirror for concave lens m=v/c same for convex lens