A) Virtual at infinity
B) Real at infinity
C) Virtual at 20 cm towards left of convex lens
D) Real at 10 cm towards left of lens.
Correct Answer: D
Solution :
[d] Refraction from lens for \[{{I}_{1}}\] \[\frac{1}{v}-\frac{1}{u}=\frac{1}{f}\] \[\frac{1}{v}-\frac{1}{-30}=\frac{1}{20}\] \[v=60cm\] Refraction from lens for \[{{I}_{3}}\] \[\frac{1}{v}-\frac{1}{u}=\frac{1}{f}\] \[\frac{1}{v}-\frac{1}{+20}=\frac{1}{20}\] \[v=10cm\]You need to login to perform this action.
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