Linear magnification produced by a concave mirror may be :
less than 1 or equal to 1
more than 1 or equal to 1
less than 1,more than 1 or equal to 1
less than 1 or more than 1
With both eyes open, a person's field of view is about :
90°
150°
180°
360°
The ratio of the sine of the angle of incidence to the sine of angle of refraction is constant and is called
Malus's law
Snell's law
Optical density
Relative density
The focal length of a spherical mirror of radius of curvature 30 cm is :
10 cm
15 cm
20 cm
30 cm
A person cannot see the distant objects clearly (though he can see the near by objects clearly).He is suffering from the defect of vision called :
cataract
hypermetropia
myopia
presbyopia
The refraction of light is commonly known as
bending
scattering
reflection
interference
The miror used by a dentist to examine the teeth of a person is :
convex
concave
plane
both concave and convex
The defect of vision which cannot be corrected by using spectacles is :
A diverging lens is used in :
a magnifying glass
a car to see objects on rear side
spectacles for the correction of short sight
a simple camera
Linear magnification (m) produced by a rear view mirror fitted in vehicles :
is equal to one
is less than one
is more than one
can be more or less than one depending on the position of object
