ray optics Flashcards
1
Q
laws of reflection
A
- i+r
- incident,normal and reflected ray lie in same plane (R.(N*I))=0
2
Q
angle of deviation
A
180-2i
3
Q
If after n reflections light retraces its path then angle is
A
90/n
4
Q
point of intersection of incident rays
A
object
5
Q
point of intersection of reflected rays
A
image
6
Q
region in which reflected rays are present
A
field of view
7
Q
total deviation in combination of 2 mirrors
A
360-2θ (θ=alpha+beta) both i’s
8
Q
position vectors sign changes based on
A
the axis of mirror
9
Q
incident ray rotates through alpha clockwise
A
reflected ray rotates through alpha anticlockwise
10
Q
incident ray rotates through alpha clockwise
A
reflected ray rotates through 2*alpha clockwise
11
Q
total no of reflections made by mirror before coming out
A
- tan theta
- n = total distance/x
12
Q
time in reflection
A
11:59:60
13
Q
minimum length of mirror so man can see himself is
A
H/2
14
Q
Vimage = -Vobject
A
15
Q
Vimage = 2Vm - Vo
A
