OPTICS WARM-UP 1
Please explain in your own words what a focal length is. Try not to use any equations or refer to a specific type of mirror or lens.
OPTICS WARM-UP 1
Please explain in your own words what a focal length is. Try not to use any equations or refer to a specific type of mirror or lens.
OPTICS WARM-UP 2
1. Calculate the minimum size of a mirror such that a six-foot-tall person can see himself from head to toe. Also, state how far above the floor the bottom of the mirror must be mounted
2. Total internal reflection can occur when light traveling in a medium reaches a boundary
with a medium having a lower index of refraction
with a medium having a higher index of refraction
with any other medium
that is smooth enough
none of the above
3. If we use a lens with a focal length of 25 cm to form an image of an object that is 5
cm tall, how far away must the object be for the image distance to be equal to 25 cm? Does your answer depend on the size of the object, the focal length, or both?
OPTICS WARM-UP 3
The lens at the front of your eye must produce a sharp image on your retina at the back of your eyeball. If your vision is good, it can do this whether the object is 1 ft or 100 yd away. Estimate the range of focal lengths that a "good" eye can adopt
OPTICS WARM-UP 3
The lens at the front of your eye must produce a sharp image on your retina at the back of your eyeball. If your vision is good, it can do this whether the object is 1 ft or 100 yd away. Estimate the range of focal lengths that a "good" eye can adopt