A) Image disappears
B) Magnified image
C) Erect real image
D) No change
Correct Answer: A
Solution :
The focal length of the lens is given as \[\frac{1}{f}=\left( \frac{{{\mu }_{2}}}{{{\mu }_{1}}}-1 \right)\left( \frac{1}{{{R}_{1}}}-\frac{1}{{{R}_{2}}} \right)\] If the setup is immersed in water, the focal length of the lens increases. Hence the image shifts further away from the lens; while the position of screen has been kept unchanged. So, the image will not be observed on the screen.You need to login to perform this action.
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