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Our activity

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girls please don't delet your previous answers and my comments,write further

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Observation:
.When we place the mirror on a text , the letters are raised (seemed to be displaced from it's original position.)
.When we direct a ray of light (torch) towards the mirror the light seems to bend at the corners
But when we direct the light towards the surface regions of the mirror,light does not bend
Conclusion: For light to bend there should be an angle formed (at the corners of the mirror)
.OpticalDensity is also an important factor
This is called refraction of light.

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The amount of bending depends on two things:

Change in speed – if a substance causes the light to speed up or slow down more, it will refract (bend) more.

Angle of the incident ray – if the light is entering the substance at a greater angle, the amount of refraction will also be more noticeable. On the other hand, if the light is entering the new substance from straight on (at 90° to the surface), the light will still slow down, but it won’t change direction at all.

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We observed through the glass that the closer the glass is to the book, the more magnified the image. However when the glass is kept at a right angle to the book, the image formed is the same as the original writing.

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When the pencil is immerssed in water it appears bend and enlarged.this is called refraction of light.

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When a coin is immersed in water,thecoin apppears enlarged. The views are different from different angles. For eg. When looked from the top the object of the coin appears the same size. This is because of Refraction.

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Refraction is the bending of a wave when it enters a medium where its speed is different. The refraction of light when it passes from a fast medium to a slow medium bends the light ray toward the normal to the boundary between the two medi

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When we immersed a pencil in the beaker filled with water we saw that the part from where the pencil was immersed it was large and when we viewed it from the top it was normal.we concluded that this was because of the optical density of the medium and the property of refraction
good inferences
did the pencil  seem shifted in positon also? SUCH A CLEAR PICTURE SHOWING THE REFRACTION OF THE PENCIL!.

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* when a pencil is immersed it appears to bend.
CONCLUSION: light bends through different medium.
!
Challenge yourselves,students!

Can explore more  how it it appearsand how it is seen from different angles and why parvathy and Surbhi can draw and anlayse  while Nasreen and Aysha should write about it. -Viji Ma'am

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Observation:
1. The pencil appears to bend when immersed in
2. The pencil also seems to be enlarged.

Conclusion:
The light bends when it passes through different mediums. This is refraction.😊

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Vismaya, Jamanaa, Latifa, Jeethu
-The light travels faster in air than in water.
-When observed from a particular angle the pencil is enlarged, while in other angle it is bend while viewing from above it remains normal. Therefore  the angle of observation is one of the factors depending on refraction.
Well differentiated with repec tto angles!-viji ma'am

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well shot snap girls!viji ma'am

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When a coin or scale is immersed in water, the objects appears enlarged. It looks different from each possible views. But if it is seen from the top, the object appears in the same size. This is observed because of the refraction.
CAN TRY TO DRAW AND ANALYSE viji ma'am

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Observation: We tend to find that the letters have been changed from its original place when we have allowed the rectangular glass slab to rest on the sheet.
Conclusion: When lights travels through different mediums , there are either changes from its original place or it bends.
Good ! Ayesha you could drawans anlayse the rays ,Navya you should try drawing  and label the  refraction through a glass slab-Viji Ma'am

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When we immerse a coin inside a beaker filled with water, we observe that the coin appears slightly raised due to the refraction (bending).
Expect aswathi ,sivsni and faaida to draw analyse and explain further observaitons -like does the  angle change the nature of the shift ?
NAjia and trina will give reason for these changes viji ma'am

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Refraction of light through the plant vase at  my home. -Viji