2. The expression of refractive index of a prism id given by the following relation:
A + D
sin
2
u=
Assuming the error of A and D as AA and AD, express the error of
sin(A/2)
u. Here ‘A’ is the angle of the prism and 'D' is the angle of deviation. write the error in from of Q=q+d​

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.

i need with 1.3.2 investigate cycling o2 and co2 apex

we need to see it