Give two examples of transparent medium that are denser than air

According to cartesion sign convention, which mirror and which lens has negative focal length?

Copy this figure in your answer book and show the direction of the light ray after reflection

When a ray of light passes from air into glass, is the angle of refraction greater than or less than the angle of incidence?

What do you conclude about the speed of light in diamond if you are told that the refractive index of diamond is 2.41?

Why are convex mirrors preferred to use rear view mirrors in vehicles?

What is real image?

What is virtual image?

What happens when a ray of light travels from rarer medium to the denser medium?

What happened when a ray of light travels from denser medium to rarer medium?