Physics Test #2

Question 1

what is refraction of light

Answer 1

light bends as it travels from one medium to a different medium

Question 2

where does the refracted ray go when entering high to low density medium

Answer 2

it will go away from the normal line when entering a less dense substance

Question 3

where does the refracted ray go when entering low to high density medium

Answer 3

it will go towards the normal line when entering a more dense substance

Question 4

what formula is used to find the index of refraction

Answer 4

n = c/v
n= speed of light in a vacuum divided by the speed of light in the medium

Question 5

is the speed of light in a vacuum the fastest?

Answer 5

yes

Question 6

LOST characteristics for an object past 2F of a converging lens

Answer 6

L =between 2F and F
O= Inverted
S = smaller
T= real

Question 7

LOST characteristics for an object on 2F of a converging lens

Answer 7

L= same or at 2F
o= inverted
s= same
T= real

Question 8

LOST characteristics for an object between 2F and F of a converging lens

Answer 8

L= beyond 2F
o=inverted
s= larger
t= real

Question 9

LOST characteristics for an object on F of a converging lens

Answer 9

No Image Formed

Question 10

LOST characteristics for an object in front of F of a converging lens

Answer 10

L= Behind the lens
O= Upright
S= larger
T= virtual

Question 11

LOST characteristics for a diverging lens

Answer 11

L= Behind the lens
O= Upright
S= Smaller
T= virtual

Question 12

Similarities and differences between lenses and mirrors

Answer 12

Similarities
-can make images that are real or virtual, upright or inverted and bigger or smaller
-SALT can be used to describe changes for both
Differences
-in lenses light bends (refracts) in mirrors it bounces

Question 13

when receiving questions about how deep an object would appear what is the 2 words that need to be stated

Answer 13

Apparent Depth

Question 14

convex is like which type of lense

Answer 14

converging

Question 15

concave is like which type of lense

Answer 15

diverging

Question 16

In thin lense equations how do you know if D0 is negative or postive

Answer 16

ALWAYS POSITIVE

Question 17

In thin lense equations how do you know if Di is negative or postive

Answer 17

real= postive
virtual= negative

Question 18

In thin lense equations how do you know if F is negative or postive

Answer 18

converging= positive
diverging= negative

Question 19

when is Hi negative for thin lense equations

Answer 19

when it’s an inverted image