Consider Figure mentioned below. At which of the lettered positions would an observer be able to see the image of the dot in the mirror?

The law of reflection establishes a definite relationship between the angle of incidence of a light ray striking the boundary between two transparent media and its angle of reflection. Describe this relationship.

The isotope silver- $107 *$ undergoes gamma decay. Write the reaction equation, and determine the identity of the daughter nucleus.

Compute the approximate ratio of the amount of blue light in scattered sky light to the amount of orange.

Light traveling along direction $\mathrm{SO}$ strikes the surface of a plane mirror. Which of the paths $O P, O Q, O R$, or $U I$ best describes the path of the light reflected from the mirror? Defend your choice by appealing to the appropriate law(s) of optics.

If the mirror described in the previous problem is used to form an image of the same object now located $16 \mathrm{~cm}$ in front of the mirror, what would the new image position be? Assuming that the magnification equations developed for lenses also apply to mirrors, describe the image thus formed.

If a boat is producing a bow wave as it moves over the water, what must be true about its speed?

An observer $O$ stands in front of a plane mirror. Which of the numbered locations 1 through 5 best represents the location of the image of the source $S$ seen by the observer? Justify your choice by appealing to the anoropriate law (s) of optics.

The equation connecting $s, p$, and $f$ for a simple lens can be employed for spherical mirrors, too. A concave mirror with a focal length of $8 \mathrm{~cm}$ forms an image of a small object placed $10 \mathrm{~cm}$ in front of the mirror. Where will this image be located?

A light ray traveling in air strikes the surface of a slab of glass at an angle of incidence of $50^{\circ}$. Yart of the light is retlected and part is refracted. Find the angles the reflected and refracted rays make with respect to the normal to the air-glass interface.

Compared to a person's height, what is the minimum length (top to bottom) of a mirror that will allow the person to see a complete image of themselves from head to toe?

A light ray traveling in air strikes the surface of a slab of glass at an angle of incidence of $50^{\circ}$. Yart of the light is retlected and part is refracted. Find the angles the reflected and refracted rays make with respect to the normal to the air-glass interface.

The focal length of a diverging lens is negative. If $f=-20 \mathrm{~cm}$ for a particular diverging lens, where will the image be formed of an object located $50 \mathrm{~cm}$ to the left of the lens on the optical axis? What is the magnification of the image?

A lightbulb manufacturer makes bulbs with different "color temperatures," meaning that the spectrum of light they emit is similar to a blackbody with that temperature. What would be the difference in appearance of the light from bulbs with color temperatures of 2,000 $\mathrm{K}$ and $4,000 \mathrm{~K}$ ?