Question

1. Sketch ray diagrams for a concave mirror when i) m = -1, ii) m = -0.5 ili) m = -3 iv) m = +1.5
You have an hand hold mirror that gives a virtual image of your face, enlarged by a factor 1.5,
when you hold the mirror 30 cm away, what is the mirror's focal length.
3. A concave mirror has focal length 50 cm. You want this mirror to form a real image 1.2 times
larger than an object. Where the object is to be placed. Draw a ray diagram to locate the image
Where should you place the same object so that there is a virtual image 1.2 times larger than
the object.
4. A car's outside rear view mirror is convex with f = -1.0 m. In the mirror you see a truck that
actually 3.5 m tall and 10 m behind you. What are its apparent height and location?
5. The speed of light in a new type of plastic is 2.11 x 10 m/calculate its refractive index.
6. A diver shines a flash light upward towards the water surface. Describe what happens when th
flash light beam strikes the water's surface with the angles i) 20°) 40 m) 60.
7. For a convex lens with focal length 50 cm draw ray diagrams to show image formation for
object i) 150 cm ii) 80 cm ill) 35 cm from the lens.
8. Draw ray diagram for a convex mirror with an object 100 cm from the mirror and an uprig
image 25 cm on the other side of the mirror.
9. A concave mirror has a focal length 20 cm. If you place a 3 cm tall object 60 cm from the mirr
where the image will be formed. What is its magnification.​

Answer 1

Answer:

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