Question

Find the focal length of a concave mirror with object distance 6cm and image distance 24cm​

Answer 1

Answer:

Object distance, u=24cm

Object distance, u=24cmImage distance, v=16cm

Object distance, u=24cmImage distance, v=16cmFrom mirror formula

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1 =

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1 = v

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1 = v1

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1 = v1

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1 = v1 +

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1 = v1 + u

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1 = v1 + u1

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1 = v1 + u1

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1 = v1 + u1

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1 = v1 + u1 f

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1 = v1 + u1 f1

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1 = v1 + u1 f1

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1 = v1 + u1 f1 =−

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1 = v1 + u1 f1 =− 16

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1 = v1 + u1 f1 =− 161

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1 = v1 + u1 f1 =− 161

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1 = v1 + u1 f1 =− 161 −

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1 = v1 + u1 f1 =− 161 − 24

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1 = v1 + u1 f1 =− 161 − 241

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1 = v1 + u1 f1 =− 161 − 241

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1 = v1 + u1 f1 =− 161 − 241

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1 = v1 + u1 f1 =− 161 − 241 =−(

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1 = v1 + u1 f1 =− 161 − 241 =−( 16×24

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1 = v1 + u1 f1 =− 161 − 241 =−( 16×2424+16

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1 = v1 + u1 f1 =− 161 − 241 =−( 16×2424+16

Object distance, u=24cmImage distance, v=16cmFrom mirror formulaf1 = v1 + u1 f1 =− 161 − 241 =−( 16×2424+16 24/10)

f=9.6cm= focal length

f=9.6cm= focal lengthRadius of cuvature R=2f

f=9.6cm= focal lengthRadius of cuvature R=2f=2×−9.6

f=9.6cm= focal lengthRadius of cuvature R=2f=2×−9.6=−19.2cm

f=9.6cm= focal lengthRadius of cuvature R=2f=2×−9.6=−19.2cmmagnification, m=− u/v

=− 24/16

m=− 3/2