The Human Eye and the Colourful World MCQ Questions Class 10 Science Chapter 11
NCERT MCQ Questions for Class 10 Science Chapter 11 The Human Eye and the Colourful World. The Human Eye and the Colourful World MCQ Questions with Answers from Class 10 Science.
The Human Eye and the Colourful World MCQ Questions Class 10 Science Chapter 11
The Human Eye and the Colourful World Multiple Choice Questions with Answers Class 10 Science Chapter 11 PDF is available.
1) In human eye the image is formed on the
a) Cornea
b) Pupil
c) Iris
d) Retina
Ans: d) retina
2) Cornea is the thin membrane through which
a) Light reflects
b) Light refracts
c) Light diapers
d) Light enters the eye
Ans: d) light enters the eye
3) _____ is the dark muscular diaphragm which controls the size of the pupil.
a) Cornea
b) Retina
c) Ciliary muscle
d) Iris
Ans: d) iris
4) The amount of light entering the eye is controlled by
a) Iris
b) Pupil
c) Cornea
d) Ciliary muscle
Ans: b) pupil
5) The ability of eye lens to adjust the focal length is called as
a) Reflection
b) Refraction
c) Accommodation
d) Dispersion
Ans: c) accommodation
6) The least distance of distinct vision for a young adult with normal vision is
a) 30cm
b) 20cm
c) 25cm
d) 15cm
Ans: c) 25cm
7) The far point of the normal eye is
a) 20m
b) 25m
c) 25cm
d) Infinity
Ans: d) infinity
8) The _____ causes partial or complete loss of vision
a) Myopia
b) Hypermetropia
c) Cataract
d) Presbyopia
Ans: c) cataract
9) Myopia is also known as
a) Far sightedness
b) Near sightedness
c) Both a and b
d) None
Ans: b) near sightedness
10) For myopia the person with defect has the far point
a) Beyond infinity
b) At infinity
c) Nearer than infinity
d) None
Ans: c) nearer than infinity
11) The defect myopia is corrected by using a
a) A concave lens of suitable power
b) A convex lens of suitable power
c) Concave mirror
d) Convex mirror
Ans: a) a concave lens of suitable power
12) In myopic eye the image is formed
a) In front of retina
b) Behind retina
c) On the retina
d) None
Ans: a) in front of retina
13) Hypermetropia is also called as
a) Presbyopia
b) Far sightedness
c) Near sightedness
d) None
Ans: b) far sightedness
14) For hypermetropic eye the near point is
a) At the normal near point
b) Beyond normal near point
c) Farther away from the normal near point
d) None
Ans: c) farther away from the normal near point
15) The hypermetropia is corrected by using a
a) Concave mirror
b) Convex mirror
c) Concave lens of suitable power
d) Convex lens of suitable power
Ans: d) convex lens of suitable power
16) When the focal length of eye lens is too long then which defect is occured
a) Presbyopia
b) Myopia
c) Hypermetropia
d) Both a and b
Ans: c) hypermetropia
17) The elongation of eyeballs causes
a) Myopia
b) Hypermetropia
c) Presbyopia
d) None
Ans: a) myopia
18) The presbyopia chases due to
a) Elongation of eyeballs
b) Gradual weakening of ciliary muscle
c) Diminishing flexibility of eye lens
d) Both b and c
Ans: d) both b and c
19) The common type of bi-focal lenses which consist of both concave and convex lenses are used to correct the defect called as
a) Hypermetropia
b) Myopia
c) Presbyopia
d) None
Ans: c) presbyopia
20) The phenomenon of scattering of light by colloidal particles gives rise to
a) Reflection
b) Refraction
c) Blue colour of sky
d) Tyndall effect
Ans: d) Tyndall effect
21) The splitting of white light into its constituents colours is called as
a) Diffraction of light
b) Dispersion of light
c) Scattering of light
d) Interference of light
Ans: b) dispersion of light
In case you are missed :- Previous Chapter MCQ Questions
22) The blue colour of the sky and reddening of the sun at sunrise and sunset is due to
a) Tyndall effect
b) Dispersion of light
c) Refraction of light
d) Scattering of light
Ans: d) scattering of light
23) The twinkling of stars is due to
a) Scattering of light
b) Refraction of light through atmosphere
c) Dispersion of light
d) Tyndall effect
Ans: b) refraction of light through atmosphere
24) Planets do not twinkle because
a) They are point source of light
b) Huge source of light
c) They didn’t acts as a point source of light
d) Both b and c
Ans: d) both b and c
25) The sky appears dark to an astronaut because of
a) Refraction
b) Scattering
c) There is no atmosphere for scattering of light
d) Dispersion
Ans: c) there is no atmosphere for scattering of light
26) If the student is not able to read the letters written on blackboard that means he is suffering from
a) Hypermetropia
b) Presbyopia
c) Myopia
d) Cataract
Ans: c) myopia
27) The enormous light sensitive cells are located in
a) Pupil
b) Cornea
c) Ciliary muscle
d) Retina
Ans: d) retina
28) The rainbow is always formed in
a) In front of the sun
b) In opposite direction of the sun
c) Both a and b
d) None
Ans: b) in the opposite direction of the sun
29) The blue colour is scattered more in air because
a) It has longer wavelength
b) It has no wavelength
c) It has shorter wavelength
d) If has fixed wavelength
Ans: c) it has shorter wavelength
30) What happens when ciliary muscle get relaxed
a) We see distinct objects clearly
b) We see nearby objects clearly
c) Focal length get increased
d) Both a and c
Ans: d) both a and c
31) What happens when ciliary muscle get contacted
a) Focal length decreases
b) We can see nearby objects
c) We can see distinct objects
d) Both a and b
Ans: d) both a and b
32) Cataract can be corrected by
a) Concave lens
b) Convex lens
c) Bifocal lens
d) Cataract surgery
Ans: d) cataract surgery
33) If the person is using lens of -5D that means he is suffering from
a) Hypermetropia
b) Presbyopia
c) Myopia
d) Cataract
Ans: c) myopia
34) If the person is using lens of +5D that mean she is suffering from
a) Hypermetropia
b) presbyopia
c) Myopia
d) Cataract
Ans: a) hypermetropia
35) The relationship between focal length f and the power of lens is
a) F= 1/P
b) P= 1/f
c) Both a and b
d) P= 2f
Ans: c) both a and b
36) According Rayleigh’s scattering less is the wavelength
a) More is the scattering
b) Less is the scattering
c) Moderate is the scattering
d) None is the scattering
Ans: a) more is the scattering
37) The deep blue colour of the ocean is due to
a) Dispersion
b) Refraction
c) Scattering
d) Interference
Ans: c) scattering
38) The sun appears white at noon due to
a) More scattering of light
b) No scattering of light
c) Least scattering of light
d) None
Ans: c) least scattering of light
39) The formation of rainbow is due to
a) Refraction
b) Dispersion
c) Total internal reflection
d) a, b and c
Ans: d) a, b and c
40) Which colour has fastest speed
a) Blue
b) Violet
c) Red
d) Yellow
Ans: c) red
41) The order of decreasing wavelength in colours is
a) ROYGBIV
b) VIBGYOR
c) BGVIYOR
d) ROVIBGY
Ans: a) ROYGBIV
42) The relation between radius of curvature of lens and it’s focal length is
a) R= 2f
b) F= 2R
c) R= f/2
d) F= R/2
Ans: a) R= 2f
43) The angle through which all the coloured light get deviated from prism is called
a) Angle of dispersion
b) Angle of scattering
c) Angle of refraction
d) Angle of deviation
Ans: d) angle of deviation
44) The different colours of light are due to different
a) Same path travelled by each light
b) No path is travelled by each light
c) Different path travelled by each light
d) Both a and b
Ans: c) different path travelled by each light
45) The colour of the scattered light depends on the
a) Wavelength of light
b) Velocity of light
c) Size of the scattering particles
d) None
Ans: c) size of the scattering particles
46) The scattering of light which makes particles visible is called as
a) Scattering of light
b) Dispersion of light
c) Refraction of light
d) Tyndall effect
Ans: d) Tyndall effect
In case you are missed :- Next Chapter MCQ Questions
