Question

** All floating point numbers should round up to 2 d.c. if necessary.

1. Given the information below:

I_L = 6

k_d = 0.66

θ= 140

Calculate the resulting diffuse intensity by using Lambert's Law for Diffuse Reflection.

I_d =  

* Do the calculation and round up at the last step to get the answer.

Answer 1

The Lambert's law formula is given by:

Where,

Intensity of light source
Diffuse reflection coefficient  
Angle between the direction of light source and surface normal
Diffuse reflection intensity

Now calculating diffuse reflection intensity: