Light

Question 1

What is does it mean when a object is transparent.

Answer 1

Transparent objects are see through as light rays are able to pass through that material easily. E.g Windows, glass, glasses

Question 2

What does it mean when a object is translucent.

Answer 2

Translucent objects are blurry as some of the light rays are able to pass through but the other light rays are scattered. E.g frosted glass, wax paper and filter paper.

Question 3

What is a concave mirror

Answer 3

A concave mirror or lens is a piece of glass that is bent inwards and is used in cameras and telescopes.

Question 4

What is a convex mirror

Answer 4

A convex mirror or lens are bent outwards and is used in eyeglasses or car mirrors

Question 5

Explain dispersion

Answer 5

Dispersion is when light rays goes through a prism-like medium, spitting white light into the visual colour spectrum.

Question 6

What is total internal reflection

Answer 6

TIR is when light rays are reflected inside a medium. If the angle of incidence is under 40 degrees the light becomes trapped inside the medium.

Question 7

What is refraction

Answer 7

Refraction is when light rays enter two different mediums with different densities, slowing down or speeding up the light Ray, causing it to bend at the normal.

Question 8

What is the focal point

Answer 8

The vocal point is the point where the light rays converge or diverge when it passes through a lens or when it is reflected off a mirror.

Question 9

What is properties of an opaque object

Answer 9

Light is either reflected or absorbed, so you can’t see through the material.