Question

its important to me plz explain​

Answer 1

Explanation:

please make Brainliest

Answer 2

Explanation:

if n is refractive index then

1/f=(n-1)(1/R'-1/R")

let1/R'-1/R")=k

then 1/fa=[n(ag)-1]k

if n(ag) =3/2,(Aw)=4/3

then n(wg) =n(ag)/n(aw)

=(3/2)*(3/4)=9/8

if fa =10cm

hair essay is focal length of Glass lens in air and FW is focal length of Glass lens in water then

1/fw=[n(wg)-1]k

1/fw=(9/8-1)k and

1/10=(3/2-1)k

dividing

10/fw =(9/8-1)/(3/2-1)

=(1/8)/(1/2)

10/fw=1/4

fw=10*4

fw= 40 cm

ANSWER

Hope it helps

Mark me branliest

like and follow me tooo.....