Reflection, Refraction & Diffraction

Question 1

How do we see objects?

Answer 1

Due to reflection.

Question 2

Draw the image of a plane mirror reflection

Answer 2

Question 3

When light goes through a more dense object, what happens?

Answer 3

The ligh bends toward the normal.

Question 4

What is diffraction?

Answer 4

When a wave travels through a gap or an edge, it spreads out.

Question 5

Why can i hear round a corner, but not see round a corner?

Answer 5

Wavelenth of light is too small to be diffracted round a corner or gap. However, sound waves can easily be diffracted round a corner or gap.

Question 6

What happens with diffraction in a large gap?

Answer 6

The waves spead out by a small amount.

Question 7

what happens with diffraction in a small gap?

Answer 7

The waves spread out by a large amount.