Question

for a soherical mirrors__is true
a) f=2R
b)R=2f
c)fR=2
d)fR=1/2​

Answer 1

Explanation:

option 2

f=2R

please follow me and mark as brainlist

Answer 2

Answer:

For a spherical mirror, Radius of curvature = 2 × Focal length i.e., R = 2f.

• Different lengths are measured from the pole of the mirror.
• The object distance is always negative.
• The line joining the pole to the centre of curvature is called the principal axis.
• The focus is a point at which a ray parallel to the principal axis meets after the reflection.
• The ray parallel to the principal axis, after reflection will pass through the focus.
• A ray passing through the principal focus of a mirror, after reflection becomes parallel to the principal axis.
• A ray passing through centre of curvature, after reflection is reflected back along the same path.
• A ray incident obliquely to the principal axis, after reflection, is reflected obliquely making the same angle as they follow laws of reflection.