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TS EAMCET · Physics · Ray Optics

If the image of an object is at the focal point \(f\) to the right side of a convex lens, the position of the object on the left of the lens is at

  1. A \(f\)
  2. B \(2 f\)
  3. C \( < f\)
  4. D \(\infty\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(\infty\)

Step-by-step Solution

Detailed explanation

The given situation is shown in the following figure Given, \(\quad v=+f, f=+f\) By \(\frac{1}{v}-\frac{1}{u}=\frac{1}{f}\) We have, \(\frac{1}{f}-\frac{1}{f}=\frac{1}{u} \Rightarrow \frac{1}{u}=0 \Rightarrow u=\infty\) So, object is at \(\infty\) distance on right side of lens.
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