Geometrical Optics

Geometrical Optics
Light enters the eye through a transparent membrane known as
cornea
pupil
retina
iris
Author: rikazzz Comment
Geometrical Optics
The size of the image is always smaller than the object in
convex mirror
concave mirror
silver mirror
plane mirror
Author: rikazzz Comment
Geometrical Optics
An object 20 cm tall is located 14 cm from a concave mirror having focal length 20 cm. The image is located at
30 cm
46.7 cm
35.6 cm
32.5 cm
Author: rikazzz Comment
Geometrical Optics
The ratio of sin (x °) of the angle of incidence to sin (x °) of the angle of refraction is
Gravitational law
Reflection law
refraction law
Snell’s law
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Geometrical Optics
The human eye acts like a
endoscope
camera
telescope
microscope
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Geometrical Optics
The iris controls
the movement of lens
the retina
lens movement
light entering retina
Author: rikazzz Comment
Geometrical Optics
A convex mirror is used to reflect light from an object placed 30 cm in front of the mirror. If the focal length of the mirror is 20 cm then the location of the image should be
−27 cm
−37 cm
−29 cm
−47 cm
Author: rikazzz Comment
Geometrical Optics
Speed of light in air/speed of light in a medium is equal to the index of
defraction
acoustics
reflection
refraction
Author: rikazzz Comment
Geometrical Optics
When a ray of light strikes a face of prism perpendicularly, it enters the prism without deviation and strikes the hypotenuse at an angle of
30 °
45 °
90 °
60 °
Author: rikazzz Comment
Geometrical Optics
The variation of the focal length of the eye lens to form a sharp image on the retina is called
near point
far point
accommodation
hypermetropia
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