1.

Focal lens of plane convex lens (mu=3/2) is f and radius of curvature of curved surface is R. So write the relation between f and R.

Answer»

f=R
f=`R/2`
f=2R
f=`(3R)/(2)`

SOLUTION :From lens maker.s FORMULA,
`1/f=(n-1)(1/R_1-1/R_2)`
`THEREFORE 1/f=(3/2-1)(1/R-(1)/(infty))` (Here `R_1=R` and `R_2=infty`)
`=(1/2)(1/R+0)`
`=1/2xx1/R`
`=(1)/(2R)`
`therefore f=2R`


Discussion

No Comment Found

Related InterviewSolutions