Eye and Optical Instrument

Label the pictures with concave mirror or convex mirror

• a) convex mirror

  b) concave mirror

• a) concave mirror

  b) convex mirror

• a and b convex mirror

• a and b concave mirror

Why does the pinhole in the camera act like the pupil in the eye?

• Because it needs to be like that

• The pinhole acts like the pupil because light passes through it to the inside

• Because the pinhole in the camera and the pupil in the eye are the same things

• none of the above

Label the pictures with concave lens or convex lens

• a) convex lens

  b) concave lens

• a and b concave lens

• a) concave lens

  b) convex lens

• a and b convex lens

What difference do you notice between the pinhole camera and the human eye?

• The pinhole camera does have a lens, but the human eye doesn't

• The pinhole camera doesn't have a lens, but the human eye does

• They are the same things

• They don't have any differences

Why can the photographic paper in the camera be compared with the retina in the eye?

• They can be compared because both of them do the same things

• Because the paper in the camera and the retina in the eye are the same things

• They can be compared because both get an inverted, real image

• They can't be compared

What is a pinhole camera?

• None of the above

• It's a simple camera without a lens and with a small hole, or pinhole at one end

• It's a proffesional camera

• It's the camera of the cell phones

What does the optic nerve do?

• It transmits this information to the brain, which then flips the image so that we see it right side up

• It protects your brain

• It helps your brain to work better

• None of the above

How are the convex and concave lenses shaped?

• Convex lenses are thicker in the middle than at the edges.

  Concave lenses are thicker at the edges than in the middle.

• They are circle

• Concave lenses are thicker in the middle than at the edges.

  Convex lenses are thicker at the edges than in the middle.

• They don't have a shape

How are the lenses alike?

• They don't let light pass through

• Both concave and convex lenses are curved and let light pass through

• They have the same characteristics

• Concave lenses aren't curved but they let light pass through

How are the lenses different?

• They don't have any difference

• Both of them converge light beams

• Concave and convex lenses diverge light beams

• Concave lenses diverge light beams and convex lenses converge light beams