Question

How is the brain protected from shocks and injuries?
A ray of light passes through a medium of refractive index, then the speed of light ray in medium is
(Given, speed of light in air,.c = 3 x 108 m/s)​

Answer 1

Brain is protected by the skull

Answer 2

Step-by-step explanation:

The brain is enclosed inside a bony cage which is hard enough to protect the brain. Moreover, between the Bony cage and brain ,there is fluid namely Cerebrospinal Fluid (CSF). The function of this fluid is to absorb the shock and protect the brain.

Therefore,the Bony cage and CSF together protects the brain.

Hope it helps you.

Please mark it as brainliest answer.

For the next question to be answered,you should provide the refractive index of that medium also.

Anyway,

Speed of light on air/Speed of light in medium=c/v

You shuold put the Speed of light in air =3*10^8m/s and put the refractive index of the medium in place of c/v and then you will get the speed of light in the medium.