Question

Answer the questions ​

Answer 1

1. Light rays that are parallel to the principal axis of a concave mirror converge at a specific point on its principal axis after reflecting from the mirror. This point is known as the principal focus of the concave mirror.

2 we know that f=R/2

so,f=20/2

= 10cm

3 concave mirror

4. The radius of curvature, R= 32 cm

The radius of curvature, R= 32 cmRadius of curvature = 2 — Focal length (f)

The radius of curvature, R= 32 cmRadius of curvature = 2 — Focal length (f)R= 2f=

The radius of curvature, R= 32 cmRadius of curvature = 2 — Focal length (f)R= 2f=f = R/2 = 32/2 = 16

The radius of curvature, R= 32 cmRadius of curvature = 2 — Focal length (f)R= 2f=f = R/2 = 32/2 = 16Hence, the focal length of the given convex mirror is 16 cm.