# Why the position of fish inside water seems to be at less depth than that of its actual position?

• Why the position of fish inside water seems to be at less depth than that of its actual position?

Anonymous27499 | 06/06 2016 23:06
hello i am Ayesha Hussain from 10th class the answer is, ray coming from the fish reaches the observer’s eye after refraction. Thus, observer sees the image of the fish at the distance Da from the surface which is the apparent depth of the fish. On the contrary fish sees the objects away from their real distances. These are all results of the refraction of light. Following diagram helps us to calculate this apparent depth of the object under different mediums. apparent depth image As you can see refractive index of the water is equal to the ratio of real depth of fish to the apparent depth of it. More general form of our equation is given below; apparent depth equation
Positive: 21 %

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