Please help me Answering this question

Dear Student,Here, f=12cmMagnification ,M =0.5We Know that, M=vuor, 0.5=vuor, v=0.5uNow using lens formula1f=1v-1uor 112=10.5u-1-uor,  112=1+0.50.5uor 112=3utherefore, u=36 cmTherefore the object is placed at a distance of 36 cm from the lens.Regards

  • 0
m=1/2*1/1=1/2
1/2=v/u
v=u/2
1/f=1/v - 1/(-u)
1/12=1/(u/2)-1/(-u)
       = 2/u - 1/(-u)
       = -2u-u/-u^2
       = 3/u
1/12=3/u
u= 12*3
  = 36
therefore, the distance of the object from the lens is 36cm.
  • 0
What are you looking for?