optics

Question 1

electrical discharge

Answer 1

production of light by current though gas ex. neon sign

Question 2

fluresence

Answer 2

production of light by an object observed by uv light release visual light ex laundry detergent

Question 3

triboluminescence

Answer 3

production of light produced by friction with a result of scratching

Question 4

Laws of relection -

Answer 4

angle of incidence is equal to angle of reflection
the incident ray the reflected and the normal lie in the same place

Question 5

Incident ray

Answer 5

strikes a surface

Question 6

reflective ray

Answer 6

bounces of a reflective surface

Question 7

normal

Answer 7

the perpendicular line to a mirror surface

Question 8

angle of incidence

Answer 8

angle between the incident ray and the normal

Question 9

angle of reflection

Answer 9

angle between the reflected and the normal

Question 10

A light ray

Answer 10

is a line and arrow - straight line path of light

Question 11

radiate

Answer 11

infinite number of rays

Question 12

wavelengths vs energy

Answer 12

depending on the colour it determines the wave length. You can see coulor but not wave lengths

Question 13

colours of the visible spectrum

Answer 13

red, orange, yellow, green, blue, indigo, and violet.

Question 14

uses of electromagnetic waves in society

Answer 14

to transmit long/short/FM wavelength radio waves, and TV/telephone/wireless signals or energies.

Question 15

Luminous vs non-luminous objects

Answer 15

Luminous objects are those that emit their own light energy generated by themselves, and non-luminous objects are those that do not emit light energy…

Question 16

Transparent

Answer 16

Those object through which light can pass easily

Question 17

translucent

Answer 17

Those objects through which light can pass partially are called translucent

Question 18

opaque

Answer 18

The object which do not allow the light to pass through are called opaque object

Question 19

incandescence

Answer 19

the state of being extremely bright: volcano exploding

Question 20

phosphorescence

Answer 20

when something glows with light without becoming hot to the touch ex glow in the dark stars

Question 21

Chemiluminescence

Answer 21

the production of light from a chemical reaction. fire works

Question 22

bioluminescence

Answer 22

a chemical reaction. ex bacteria

Question 23

Laws of refection

Answer 23

angle of incidence equals the angle of refection.
The incident ray, the reflected and the normal all lie in the same place.

Question 24

Describing images (SALT)

Answer 24

Size- same size, smaller, larger
Attitude upright or inverted
Location- Where within the mirror
Type - real or virtual

Question 25

Real and virtual images

Answer 25

Real images are formed due to the actual intersection of light rays. Virtual images are formed due to the imaginary intersection of light rays.

Question 26

Describe what happens to light as it passes into less or more dense mediums

Answer 26

bends toward the normal