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Because when light enters a denser medium it is refracted towards normal. The same effect is seen when a straight stick is placed at an angle half into water. The stick appears bent at the point it enters the water. This phenomenon is called 'real and apparent depth', if you are interested.

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Q: The pebbles lying at the bottom of the clear water of the river appears to be raised up above their actual positionwhy?
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Why did the pebbles settle at the bottom of the glass container?

Their mass was greater than that of the water.


Why does the coin placed at the bottom of the container appers to be raised when the container is filled slowly with water?

it is because the view we are seeing the coin is from rarer to denser that is from air to water so the refractive index differs so the view we so the coin at the bottom of the cointer appears to be raised


What does the coin that lies submerged at the bottom part of water looks?

As the coin submerged in water and kept at the bottom of the vessel and if it is looked right from the top then it will appear to be lifted up by a small distance such that the actual depth / apparent depth = refractive index of water. If suppose the actual height of level of water is 12 cm then the coim will be shifted up by 3 cm. So the apparent depth will be 9 cm. Hence refractive index of water = 12/9 = 4/3 = 1.333.


What happen when you hit the coin at the bottom?

Friction is a sticky force that appears when 2 objects rub against each other. If you push or pull slowly friction helps pull or push the tower along with the bottom coin. If you push or pull quickly, the coins still rub, but the friction force doesn't have time to get the stack moving. So the coin shoots out without pulling the tower with it.


Why a coin placed at the bottom of a beaker containing water appears raised?

It is an optical illusion due to the fact that water is more dense than air and so slows the speed of light. When light travels from a less dense to a more dense material, it slows down and 'bends'.

Related questions

Why is it recommended that you put sand or pebbles at the bottom of a terrarium?

It is recommended that you put sand or pebbles at the bottom of a terrarium to allow drainage when watering plants.


Why did the pebbles settle at the bottom of the glass container?

Their mass was greater than that of the water.


Why are the pebbles at the top of the beach bigger than the ones at the bottom?

The small pebbles are more likely to fall through the gaps between bigger pebbles than the other way around.


What is at the bottom of a river?

At the riverbed, as it is called, are pebbles, sand, stones etc


What is The bottom of a river is?

At the riverbed, as it is called, are pebbles, sand, stones etc


Do pebbles or sand grains settle faster?

Sand grains settle faster because, pebbles require more energy within the river to keep them off the bottom.


Which event is the best example of erosion?

the deepening of a stream bed by pebbles rolling along the bottom of the stream


What appears to be the trend in electrom affinity as you move from top to bottom in a column?

It appears to decrease


Is garden soil sand or pebbles more absorbent?

Garden soil sand is more absorbent and retains the level of moisture for a longer period of time than pebbles. Pebbles or gravel should be put at the bottom of potted plants about 1/2 - 3 inches depending on the size of the pot for drainage.


What do small pebbles being carried down a river bed by the running water represent?

In its simplest form, erosion. More specifically, the pebbles can undergo saltation or particle transport (bottom hopping) when there is little silt in the water.


Is Bottom really a fool or is he wiser than he appears?

he's wiser than he appears BY A LOT


What kind of ground do snails need to live in to live in an aquarium?

They can just live in an aquarium with the normal pebbles on the bottom that all fish live in.