a fish lying at a distance of 2m below water surface observed a bird at a distance of 8m vertically above itself. the actual distance between the fish and the bird is
Answers
Given : a fish lying at a distance of 2m below water surface observe a bird at distance 8 m vertically above itself.
To find : the actual distance between bird ans fish
Explanation:
a fish lying at a distance of 2m below water surface
Taking sea level as origin
Fish will be at - 2 m
a bird at distance 8 m vertically above sea level
Bird position = 8 m
Distance = | Bird position - fish position |
= 8 - (-2)
= 8 + 2
= 10 m
Distance between bird & fish = 10 m
Considering refraction ans 8 m height observed
then let day distance = d m
above water = d - 2 m
Refractive index of water = 4/3
Observed distance = Distance inside water + (4/3) Distance above water
=> 8 = 2 + (4/3)(d - 2)
=> 6 = (4/3)(d - 2)
=> 4.5 = d - 2
=> d = 6.5
Distance between fish & bird = 6.5 m
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Explanation:
the correct is 6.5 pls mark as brainlest