Which of the following statements about human eye is NOT true?
The iris gives a distinct colour to the eye
The yellow spot is extremely sensitive to light
The space between lens and cornea is filled with ciliary muscles
The optic nerves enter the eye near the blind spot
In a periscope, the reflecting mirrors will be:
Perpendicular to each other
Parallel to each other
At an angle of 45°
At an angle of 60°
The outer layer of the eye is called:
Cornea
Sclerotic
Choroid
Retina
The image of an object formed by a plane mirror is:
virtual
real
diminished
upside-down
The pupil in human eye can be dilated by :
Optic nerve
Iris
The angle of incidence is
the angle that the incident ray makes with the mirror
the angle that the incident ray makes with the normal at the point of incidence
180° minus the angle that the incident ray makes with the mirror
the angle that the incident ray makes with the reflected ray
The E.N.T. doctor uses a
Convex mirror
Convex lens
Plane mirror
Concave mirror
If the angle between two mirrors is 180°,how many images will be formed?
1
2
3
many
The sun is seen before the actual sun rise because of
Reflection
Refraction
Scattering
Rectilinear propagation of light
Refraction of light takes place in the
Pupil
