Object is placed at distance 30 cm from lens given below, then distance of image from lens is $\left( \mathrm { R } _ { 1 } = 10 \mathrm {~cm} , \mathrm { R } _ { 2 } = 20 \mathrm {~cm} \right)$ (A) 20 (B) 24 (C) 30 (D) 36
Object is placed at distance 30 cm from lens given below, then distance of image from lens is $\left( \mathrm { R } _ { 1 } = 10 \mathrm {~cm} , \mathrm { R } _ { 2 } = 20 \mathrm {~cm} \right)$
(A) 20
(B) 24
(C) 30
(D) 36