A concave lens of focal length 20 cm is placed 20 cm in

Last updated: 6/21/2023

A concave lens of focal length 20 cm is placed 20 cm in front of a plane mirror as shown below Light from a very far away source is falling on the lens The p size of concave lens is sufficiently large he position of final image formed by combination is Consider the f 20 cm Educa M 1 10 cm in front of mirror 3 15 cm in front of mirror 20 cm 2 5 cm in front of mirror 4 5 cm behind the mirror The length of a wire is increased to twice while keeping its volume constant The resistivity of wire become 1 Double 2 Four times 3 Sixteen times 4 Remains unchanged