The image of a nearby object formed by a camera lens is $(a)$ at the lens' focal point. $(b)$ always blurred. $(c)$ at the same location as the image of an object at infinity. $(d)$ farther from the lens than the lens' focal point.

What type of single lens produces a virtual image that is inverted with respect to the object? (a) Both a converging and a diverging lens can produce such an image. (b) Neither a converging nor a diverging lens produces such an image. (c) A converging lens (d) A diverging lens

A bends light rays towards the optical axis.

Refracted light that bends away from the normal is light that has (a) slowed down. (b) speeded up. $(c)$ bounced. (d) diffracted.

Choose the word or phrase that best answers the question. What happens to a light ray traveling parallel to the optical axis of a convex lens that passes through the lens? A) It travels parallel to the optical axis. B) It passes through the focal point. C) It is bent away from the optical axis. D) It forms a virtual image.

Light normally travels in straight lines, but it "bends" in an optical fiber. Explain.

Which way does the lens shown bend light that is parallel to the optical axis ? A) toward its optical axis B) toward its focal point C) away from its optical axis D) away from its edges

Which of the two interfaces, air-glass-water or glass-water, has the largest critical angle for total internal reflection given that the refractive index of air is 1, the refractive index of glass is 1.5, and the refractive index of water is 1.33?

Currents of approximately 0.06 A can be potentially fatal. Currents in that range can make the heart fibrillate (beat in an uncontrolled manner). The resistance of a dry human body can be approximately 100 k $\Omega$ . (a) What voltage can cause 0.06 A through a dry human body? (b) When a human body is wet, the resistance can fall to 100 $\Omega$ . What voltage can cause harm to a wet body?

If the net force on an object is zero, the object could (a) be at rest, (b) be in motion at a constant velocity, (c) have zero acceleration , (d) all of the preceding.

If the net force on an object is zero, the object could (a) be at rest, (b) be in motion at a constant velocity, (c) have zero acceleration , (d) all of the preceding.

Complete the sentence by adding an adverb phrase that answers the question posed in the parentheses. Example 1. (Why?) Mircea bought an inexpensive camera $\underline{\text{for her beach trip}}$.

(How?) Call your cousin ____________________________________________.

Complete each sentence by writing the form of the verb indicated in parentheses.

_________ anyone _________ my little brother? (present perfect of see)

There are 42 Major League baseball players (as of 2011) that have hit 50 or more home runs in one season. Construct a stem and leaf plot and analyze the data.

$$\begin{array}{llllll}50 & 51 & 52 & 54 & 59 & 51 \\ 54 & 50 & 58 & 51 & 54 & 54 \\ 56 & 58 & 56 & 70 & 54 & 52 \\ 58 & 54 & 64 & 52 & 73 & 57 \\ 50 & 60 & 56 & 50 & 66 & 54 \\ 52 & 51 & 58 & 63 & 57 & 52 \\ 51 & 50 & 61 & 52 & 65 & 50\end{array}$$