Question

refer to the image shown to answer the question. if a light ray strikes the shiny surface at 70 degrees, what is the measurement of the reflected ray? 170 degrees 110 degrees 70 degrees 10 degrees

Explanation:

Step1: Identify angle with normal

The incident angle given is with respect to the surface ($70^\circ$). The angle with the normal is calculated as:
$\theta_i = 90^\circ - 70^\circ = 20^\circ$

Step2: Apply law of reflection

The law of reflection states the reflected angle (with normal) equals the incident angle:
$\theta_r = \theta_i = 20^\circ$

Step3: Find angle with surface

Calculate the reflected ray's angle relative to the surface:
$\theta_{\text{surface}} = 90^\circ + \theta_r = 90^\circ + 20^\circ = 110^\circ$

Answer:

110 degrees