Question

While finishing from a dock, you saw a fish in the water. For this, you can use either a bow and arrow, or a laser gun. Which of the following strategies do you follow?
A. Aim the arrow as well as the laser gun both at the fish.
B. Aim the arrow below the fish and the laser gun at the fish.
C. Aim the arrow below the fish and the laser gun above the fish.
D. Aim the arrow below the fish and the laser gun below the fish.

Answer 1

Hint: In order to answer this question, to know the exact strategy for the given statement or question, we will discuss the reason to trap a fish, either we can use a bow and arrow, or a laser gun. And then we will discuss other related examples.

Complete answer:
Due to refraction, we’ll see the fish slightly above where it is. So, aim the bow and arrow below it (which is its true depth). The laser beam, on the other hand, will be refracted as it enters the water. As a result, we should point the laser beam straight towards the fish.

The refraction angle changes depending on your distance from the fish. You will have an advantage if you can get straight above the fish with a boat or by standing on a rock in the middle of a river. The fish image should not be refracted to such an extreme from the original by hovering over it.

Now, we will understand this by different types such as why do fishermen aim at the tail of the fish while fishing with a spear? So, all of this has to do with light refraction and true and apparent depth. The light from the fish bends away from the normal when it leaves the water (right angled line to the surface). The fish appears to be closer to the surface as a result of this.

If the fisherman aims for the fish's centre, the spear will miss (the spear will pass in front of the fish), but if they aim for the tail, they will strike the fish's body. (All of this presupposes that they are throwing the spear from behind the fish.) Fisherman aims down the line where they believe the fish's head is, but misses the fish's body.

Hence, the correct option is B.

Note: Light refracts when it goes from the fish in the water to the hunter's sight, which is fortunate for the fish. The refraction takes place at the water-air interface. A fish looks to be at a spot where it isn't because of this bending of the light path. There is a visual distortion.