Question

A light ray strikes a reflective plane surface at an angle of 54° with the surface.​

Calculate the angle of incidence​

Calculate the angle of reflection ​

Calculate the angle made by the reflected ray and the surface​

Calculate the angle made by the incident and reflected ray.​

​

Answer 1

Answer:

(a) The angle of incidence is 34°.

(b) The angle of reflection is 34°.

(c) The angle made by the reflected ray on the surface is 56°.

(d) The angle made by the incident ray and the reflected ray is 68°.

Explanation:

Referred to the attachment for the diagram.

a) Angle of incidence (i) = (90°-56°)

= 34°

So, the angle of incidence is 34°.

b) We know that angle of incidence is equal to the angle of reflection.

Hence, we get

Angle of reflection (r) = 34°.

c) Angle of reflection (r) = 34°.

So, the angle made by the reflected ray on the surface _

(90°-34°)

= 56°.

So, the angle made by the reflected ray on the surface is 56°.

d) Angle of incidence = 34°.

Angle of reflection = 34°.

The angle made by the incident ray and the reflected ray _

(34°+34°)

= 68°.

So, the angle made by the incident ray and the reflected ray is 68°.

Answer 2

EXPLANATION

a} ANGLE OF INCIDENCE= 36°

ANGLE OF SURFACE = 54°

AND AS WE KNOW THAT THE ANGLE BETWEEN THE NORMAL AND TJE SURACE IS 90°

SO 90°- 54°= 36°

b} ANGLE OF REFLECTION= ANGLE OF INCIDENCE

ANGLE OF INCIDENCE= 36°

ANGLE OF REFLECTION=36°

c} ANGLE MADE BY THE REFLECTED RAY AND SURFACE =

ANGLE MADE BY INCIDENCE RAY AND SURFACE= 54°

THUS ANGLE OF INCIDENCE= ANGLE OF REFLECTION

SO THE ANGLE MADE BY THE SURFACE AND ANGLE OF REFLECTION WILL ALSO BE = TO THE ANGLE MADE BY THE ANGLE OF INCIDENCE AND THE SURFACE

SO,ANS= 54°

d} ANGLE MADE BY THE INCIDENCE AND REFLECTED RAYS = ANGLE INCIDENCE i.e (36°)+ ANGLE OF REFLECTION i.e(36°)= 102°