Take a glass tumbler and partly fill it with water. Insert one pencil slantingly into the glass tumbler. Observe how does the pencil Look. Now remove the pencil and take one 5 Rupees coin and put it into the tumbler. Observe the coin. Note down your observations
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Explanation:
When a pencil is kept in a glass tumbler of water, it appears bent due to refraction of light. When a ray of light travels from a rarer medium(air) to a denser medium(water) it bends towards the normal. Thus, the pencil appears bent.
However, if the pencil is kept inside turpentine or kerosene the bending is not the same as ter since it is less dense than water(refractive index of kerosene is greater than water)
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