Four modifications are suggested in the lens formula to include the effect of the thickness t of the lens. Which one is likely to be correct ?
Four modifications are suggested in the lens formula to include the effect of the thickness t of the lens. Which one is likely to be correct ?
(a)1/v-1/u=t/uf
(b) t/v2-1/u=1/f
(c) 1/(v-t)- 1/(u+t) =1/f
(d) 1/v-1/v+ t/uv= t/f.
4 views
1 Answers
(c) 1/(v-t)- 1/(u+t) =1/f
EXPLANATION:
The thickness of the lens will affect the object distance or image distance. Either the thickness t will be added or subtracted to u or v. It will not be in a proportion as shown in the options (a), (b) and (d). Hence the option (c) is correct.
4 views
Answered