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°
In lateral inversion:
Right of the object will be right side of the image
Left side of the object will be left side of the image
Upside of the object will be down side of the object
Right side of the object will be left side of the image
The angle of incidence and angle of reflection in a plane mirror is :
Equal
Greater
Less
1/3rd of incident value
In our house, we uses which type of mirror to look at ourselves ?
Convex mirror
Concave mirror
Convex lens
Plane mirror
The size of the pupil of the eye is adjusted by:
cornea
ciliary muscles
optic nerve
iris
Which type of mirrors are used in telescopes for reflecting light ?
Concave mirrors
Convex mirrors
Plane mirrors
Convex lenses
The E.N.T. doctor uses a
The perpendicular drawn at any point on a mirror is called:
Incident ray
Reflected ray
Normal
Image
If the angle between two mirrors is 180°,how many images will be formed?
1
2
3
many
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
