Lesson 10 of 13
Checkpoint: mirrors, lenses and slabs
Show on a big screenA ray meets a plane mirror at 20° to the normal. What is the angle of reflection?
A concave mirror has a radius of curvature of 30 cm. What is its focal length?
A convex mirror shows a car behind you. What kind of image is it?
A ray goes from air into water at a slant. How does it bend?
A convex lens has a focal length of 20 cm. What is its power?
A ray enters a glass slab along the normal. How far is the leaving ray shifted?
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