Physics, 10.07.2019 03:00 brisafe2023

If a spear is jabbed exactly at that place where the fish appears in water, the fish is not killed. give reason

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Answer from: nateqqj

Source:

ARC Centre of Excellence in Coral Reef Studies

Summary:

Fish are not as dumb as people sometimes think. Marine scientists have found that fish that are regularly hunted with spearguns are much more wary and keep their distance from fishers. In investigating the effects of marine areas closed to fishing by customary laws, an international team of researchers working in the Pacific found that fish exposed to speargun fishing take flight much earlier when a diver approaches compared with those living in protected zones.

Answer from: angehtjgdb

The fish is not killed due to the Refraction (bending) of light.

Explanation:

The light experiences a phenomenon called Refraction that is the change of path or bending. As light travels from denser medium (water) to a less dense medium (air), its speed increases to some extent. Due to this change in speed of light, the path of the light changes. The observer sees the image of fish in the water formed by these bent rays of light coming off the fish which is at a different location and he/she jabs the spear at that location. However, as it is not the real location of fish but how it appears due to refraction, the spear is jabbed at a wrong location and the fish is not killed.

Answer from: Quest

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.

Answer from: Quest

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If a spear is jabbed exactly at that place where the fish appears in water, the fish is not killed....

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