Question

1] How does lateral displacement if emergent ray depend on the width of the glass slab and angle of incidence?

2] How does wavelength of light change on refraction?

3] The angle between the reflected ray and the incident ray is 74°.Determine the angle of incidence and reflection.

Answer 1

Heya !! ☺

---------------------------------------------------------

1] The lateral displacement of emergent ray is proportional to :-

1- the thickness of the glass slab for a given angle of incidence and a pair of media.

2- the angle of incidence for the given thickness of the glass slab and a pair of media.

---------------------------------------------------------

2] When light travels from one medium to another, the speed changes, as does the wavelength.

---------------------------------------------------------

3] The angle of incident ray and reflected ray is 74°.
angle i + angle r = 74°

We know that,
Angle of incidence = Angle of reflection

So, angle i = angle r = 74/2
=> 37°

---------------------------------------------------------

Hope my ans. is satisfactory.