A lemon kept in water in a glass tumbler appears to be bigger than its actual size when viewed from the sides. What is the reason behind this phenomenon?
Refraction of light
CONCEPT :
- Refraction of Light: The bending of the ray of light passing from one medium to the other medium is called refraction .
- The refraction of light takes place on going from one medium to another because the speed of light is different in the two media .
- The greater the differencein the speeds of light in the two media, the greater will be the amount of refraction .
- A medium in which the speed of light is more is known as optically rarer medium and a medium in which the speed of light is less is known as an optically denser medium .
EXPLANATION :
- A lemon kept in water in a glass tumbler appears to be bigger than its actual size when viewed from the sides. This is because of the refraction of light .Therefore option 3 rd is correct.
- Light is refracted as it passes from water into the air and as we know the refracted ray bends away from normal when it passes from denser to rarer medium.
- Water in a glass tumbler has a round outer surface that is convex and is a magnifying glass.
- As light is bent and being bent to the point that the object being observed appears to be larger than its normal size.
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