TS EAMCET · Physics · Wave Optics
Three lenses of focal lengths and are placed at a distance of and respectively from an object. The distance between the object and the image formed is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(B)
Step-by-step Solution
Detailed explanation
Refer above diagram,For lensA,u=-30cm,fB=+10cmThe using lens formula, the image distance forlensAis1vA-1uA=1fA⇒1vA-1-30=1+10The image distance from lensAis given by⇒vA=15cmFor lensB,u=(vA-5)=(15-5)=10cmandfB=-10cmNow image distance for lensBis1vB-1+10=1-10⇒vB=∞Similarly, for…
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