If v=10v, what value of r would limit l to 10 ma? (if you have 10 volts, what resistance would be needed to limit the current to 10 milliamps) a.100 r b.1000 ohms c.10 ohms d.1 r

The horizontal blue line through the middle of the lens is called the optical axis. as the lamp is moved above or below the axis, keeping the horizontal distance to the center of the lens constant, how does the horizontal distance from the lens to the image change?