short/long answer

Question 1

examples of concave mirrors

Answer 1

shaving mirror when the face is placed close to a concave mirror, the mirror produces a magnified image of the face. Concave mirrors are used in the headlights of cars to produce a parallel beam of light covering a longer distance on the road.

Question 2

apparent vs. actual depth underwater

Answer 2

This can be explained by using the concept of refraction and that our brains perceive light rays to always travel in a straight line. light from the submerged end of the object reaches your eyes. your brain then projects the rays backwards in a straight line to create a virtual image in the water. this virtual image is higher than the actual object resulting in the object appearing to be bent. the object appears to be at a shallower depth than it really is.

Question 3

what happens to light as it refracts through a converging and diverging lens

Answer 3

a converging lens brings refracted rays together through a single point. a diverging lens causes light rays to spread apart and refract outwards.

Question 4

what is the thin lens equation

Answer 4

1/do+1/di= 1/f

Question 5

what lenses should be used for hyperopia and myopia

Answer 5

in myopia, light rays are focused in front of the retina, so that a diverging lens is needed to diverge the rays. in hyperopia, the rays are focused behind the retina so that a converging lens is needed

Question 6

total internal reflection

Answer 6

the situation when the angle of incidence is greater than the critical angle. If you increase the angle of incidence past the critical angle, the refracted ray will no longer exit the medium. Instead, it will reflect back into the medium. diamonds and retro reflectors

Question 7

examples of convex mirrors

Answer 7

Passenger-side mirrors are convex in order to give the driver a wider field of view and minimize blind spots. The outward bulge of the mirror expands the visible field in the mirror reflection. This makes convex mirrors highly suitable for security and expand and improve visibility.

Question 8

example of concave lenses

Answer 8

eye glasses to improve near-sightedness. Binoculars- These lenses make distant objects look closer.

Question 9

examples of convex lenses

Answer 9

A magnifying glass is a convex lens used to make an object appear much larger than it actually is. Microscopes generate extremely magnified images of very small objects for this purpose convex lens are very useful