Question

the radius of curvature of concave mirror is 12 cm. Determine its focal length. hurry please ​

Answer 1

Given:

Radius of curvature of concave mirror = $12$ cm

To find:

The focal length of the concave mirror

Formula used:

$f$ = $\frac12R$

where, $f$ is the focal length

$R$ is the radius of curvature

Step-by-step explanation:

$f$ = $\frac{12}2$ cm

$f$ = $6$ cm

Answer:

Therefore, the light will converge at the focal point, which is at a distance of $6$ cm from the mirror surface.

Additional points:

• The distance from the vertex to the center of curvature is the radius of curvature ($R$).
• Finally, the distance from the mirror to the focal point is called as the focal length ($f$).
• Since the focal point is the midpoint of the line segment joining the vertex and the center of curvature, the focal length would be one-half the radius of curvature.

Answer 2

Answer:

answer is -6 cm.

Explanation:

concave mirror always real produce real image as well as negative distance