Question

answer the questions fast very urgent

Answer 1

hope it will help you

Answer 2

Magnification =-v/u=>1/2

hence u = -2v......... (1)

where u is object distance and v is mirror distance

let f be focal length of mirror

we have mirror formula ..(1/v)+(1/u)=1/f...... (2)

therefore( 1/v ) + (1/2v)= 1/ 18...... (3)

from (3) we get v=9cm hence u= -18

hence object is at the distance of 18 cm in front of the mirror

Hope this will help you ☺