Optics 3 Question 7
7. An object is at a distance of
(2019 Main, 11 Jan I)
(a)
(b)
(c)
(d)
Show Answer
Answer:
Correct Answer: 7. (d)
Solution:
- Lens formula is given as
Now, by differentiating Eq. (i), we get
[using Eq. (ii)]
Given,
Thus, the image is moved with a speed of
