A concave lens of focal length 15 cm and a convex lens of

Last updated: 6/14/2023

A concave lens of focal length 15 cm and a convex lens of focal length 30 cm are placed 15 cm apart with their principal axes coinciding A beam of light travelling parallel to the principal axis and having a beam diameter of 4 0 mm is incident on the combination In case l the light is incident from the side of the convex lens and in case II the light is incident from the side of the concave lens Then 15 cm yg xddd 30 cm a da s yg gut a au sac yw 3 z r WA MAUA chi yc ga Hulua uz ufaa sta i Fefa 1 JcII 37d 4 i c 7 3Tufaa da fa 11 cr da du cle 14 H GA G 15 cm 4 0 mm The diameter of the beam emergent from the combination is same in the two cases da faut dulua Ana gu B The diameter of the beam emergent from the combination in case l is 2 0 mm F 1 uga Ana ci 442 0 mm Correct Answer C The diameter of the beam emergent from the combination in case l is 8 0 mm F 1 Afa 44 8 0 mm The diameter of the beam emergent from the combination in case ll is 8 0 mm Mfa 11 uga Afa u 61 414 8 0 mm Correct Answer