WorksheetsPhysics-MCQ test-2
Total questions: 20
Worksheet time: 20mins
A small bulb is placed at the principle focus of a convex lens. when the bulb is switched on, the lens will produce ....... beam of light
Convergent
Divergent
Parallel
Coloured
Where should an object be placed so that a real inverted image of same size is obtained by convex lens
At 'f'
At '2f'
Infinity
Between pole and focus
Magnification of convex lens is
positive
either positive or negative
negative
zero
The power of the lens is -4D, then its focal length is
4 m
-40 m
-0.25 m
-2.5 m
In a myopic eye, the image of the object is formed
behind retina
on the retina
on the blind spot
in front of the retina
The eye defect 'presbyopia' can be corrected by
convex lens
Bi focal lens
concave lens
convex mirror
The path of the light is called as.........
axis
focal point
ray of light
path of light
Amount of light entering in to the eye is controlled by
Iris
pupil
eye lens
none
If the energy of incident and scattered beam are same, then the type of scattering is called as ............ scattering
reflex
in-elastic
elastic
bouncing
Magnification of lens can be represented as M = .......
h'/h
-v/u
h/h'
either (a) or (b)
The splitting of white light into colours is called
dispersion
refraction
reflection
scattering
Red light is used in traffic signals because
it has large wavelength
less dispersion
both (a) & (b)
symbol of danger
Convex lens produce a ..... beam of light
convergent
divergent
dispersed
scattered
When a beam of light is passed through a colloidal solution, the light will be ...............
reflected
refracted
scattered
dispersed
For air, the refractive index is .......
0
0.5
2
1
In spherical lenses, all distance are measured from
focus
optic centre
radius of curvature
none
Image formed by retina of human eye is
virtual & erect
virtual & inverted
real & inverted
real & erect
Image formed by simple microscope is ......
erect
inverted
diminished
Bright
The resolving power depends on
diameter of lens
wavelength
Refractive index
both (a) & (b)
To view the objects on the earth surface we use......
Terrestrial telescope
Astronomical telescope
magnifying glass
microscope
