Advertisements
Advertisements
Question
Part of the eye which controls the light entering is called
Options
iris
cornea
lens
retina
Advertisements
Solution
iris
Explanation:
Iris is a dark muscular structure behind the cornea, which controls the amount of light entering into the eye.
APPEARS IN
RELATED QUESTIONS
Select the correct alternative
The image formed by a plane mirror is
State which surface of a plane mirror reflects most of the light incident on it: the front smooth surface or the back silvered surface.
Figure shows an incident ray AO and the normal ON on a plane mirror. The angle which the incident ray AO makes with mirror is 30°. (a) Find the angle of incidence. (b) Draw the reflected ray and then find the angle between the incident and reflected rays.
Draw a neat two ray diagram to illustrate how a concave mirror is used as a shaving mirror.
Show an incident ray AO and the normal ON a plan mirror. draw the reflected ray and then find the angle between the incident and reflected rays.
State whether the following statement is true or false. If false, correct it.
If the incident ray makes an angle of Xo with the normal, then the reflected ray is 2Xo.
An object is placed in front of a convex mirror of focal length 25 cm. By scale, a drawing shows the formation of image and states the nature of image.
Given that v = 10 cm.
______Surface reflects the light well.
Say TRUE or FALSE
We see planets because they reflect light from the sun
