Clarify the concept of refrection index with example

1 answer:

3 0

The refractive index is used to measure how much light bends as it goes from one medium to another the refractive index of air =1 as light doesn’t bend in it

When looking into a glass of water with a straw the straw may appear bent or morphed as the water has a different refractive index to air (and the light is passing from air to glass of water)

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a metal has a density of 8.0g/cm3 a solid cube of mass 1.0kg is made from this metal how long is each side of the cube?

brilliants [131]

Answer:

5 cm

Explanation:

We are given that,

The density of metal = 8 g/cm^3

The Mass of the Solid Cube = Mass of the metal = 1 kg = 1000 g

We know that,

Density = Mass / Volume

8 = 1000 / V

$V = 1000/8\\V = 125 cm^3$

Hence, as the volume of the solid cube is 125 cm^3, its side will be the volume's cube root which is 5 cm

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