I. (a) The relation between radius of curvature and focallength is(i) f=r111) f=-(ii) f-2r(iv) f=-ă3(b) Ifincident angle is i and refracted angle is r, then theangular deviation will be(i(ii) i -r(iv)..sin isinr(iii)sin rsin i(c) Which formula is wrong among the following?(ii) V = IR5Gin 1-V(iv)R

I. (a) The relation between radius of curvature and focallength is(i)

1.	I. (a) The relation between radius of curvature and focallength is(i) f=r111) f=-(ii) f-2r(iv) f=-ă3(b) Ifincident angle is i and refracted angle is r, then theangular deviation will be(i(ii) i -r(iv)..sin isinr(iii)sin rsin i(c) Which formula is wrong among the following?(ii) V = IR5Gin 1-V(iv)R
Answer» <p>1)r=2f then f=r/22) option c</p>