When a ray of light is incident normally on a surface, then

When a ray of light is incident normally on one refracting surface of an equilateral prism (Refractive index of the material of the prism =1.5

When a ray of light is incident normally on one refracting surface of an equilateral prism (Refractive index of the material of the prism =1.5 )

When a ray of light is incident normally on one refracting surface of an equilateral prism (Refractive index of the material of the prism =1.5

When a ray of light is incident normally on a plane mirror then the angle of reflection will be

What is the angle of reflection, when a ray of light is incident normally on a plane mirror?

What happens when a ray of light is incident normal to the interface between two media? Draw the corresponding neat and labelled diagram.