To a fish underwater, viewing obliquely a fisherman standing on the bank of a lake, the man looks

Taller than what he actually is

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Shorter than what he actually is

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The same height as he actually is

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Depends on the obliquity

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Solution

The correct option is A
Taller than what he actually is

Refraction of the light:
Refraction is the change in the direction of a light wave passing from one medium to another.
Refraction is the bending of a wave when it passes from one medium to another. The bending is caused due to the differences in density between the two mediums. One being optically denser and another optically rarer medium.
Because of light refraction, this same light will shift away from the usual (NN'), and indeed the fish (denoted as F) would perceive an extended or prolonged picture of the fisherman (AB) as AB'.
The diagram is shown below:
When a ray from man B in the air (rarer medium) goes to water (denser medium), then it bends towards the normal. Therefore, it appears' to the fish as if the man is taller than he actually is.
Therefore, option A is the correct choice.

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Similar questions

Q. Answer the following questions:

(a) You have learnt that plane and convex mirrors produce virtual images of objects. Can they produce real images under some circumstances? Explain.

(b) A virtual image, we always say, cannot be caught on a screen. Yet when we see a virtual image, we are obviously bringing it on to the screen (i.e., the retina) of our eye. Is there a contradiction?

(c) A diver under water, looks obliquely at a fisherman standing on the bank of a lake. Would the fisherman look taller or shorter to the diver than what he actually is?

(d) Does the apparent depth of a tank of water change if viewed obliquely? If so, does the apparent depth increase or decrease?

(e) The refractive index of diamond is much greater than that of ordinary glass. Is this fact of some use to a diamond cutter?

Q. A fisherman is standing on the bank of a lake. To a fish underwater viewing obliquely the man looks:

Q. A diver under water, looks obliquely at a fisherman standing on the bank of a lake. Would the fisherman look taller or shorter to the diver than what he actually is?

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Q. Consider the following assertion and reason and choose the correct option.
Assertion: When a diver under water, looks obliquely at a fisherman standing on the bank of a lake, then fisher man looks taller.
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