Question

1 .Write the relation between the angle of incidence and angle of refraction for a medium.
2.What happens when Iron reacts with steam, explain with the help of chemical reaction?​

Answer 1

Explanation:

1. The relationship between the angle of incidence and angle of refraction is explained by Snell's law, which states that ratio of the sine of the angle of refraction and the sine of the angle of incidence is always constant and equivalent to the ratio of phase velocities of the two mediums it is passing through.

2.When a metal reacts with steam then the products formed are metal oxide and hydrogen gas. When red hot iron reacts with steam to form iron(II,III) oxide and hydrogen. ... Potassium reacts violently with cold water to form potassium hydroxide and hydrogen gas: 2K(s)+ 2H2O(l) --------> 2KOH(aq) + H2(g) + heat.