Q. The muscular diaphragm that controls the size of the pupil is
✅ Correct Answer: (C)
iris
Human Eye and Colourful World MCQs with answers
Dear candidates you will find MCQ questions of 10th Class - Physics | Chapter: Human Eye and Colourful World here. Learn these questions and prepare yourself for coming examinations. You can check the right answer of any question by clicking the option or by clicking view answer button.
All subjects and chapters of 10th Class are listed below. You can select any subject and chapter below to learn mcq questions of that chapter and subject.
Q. Having two eyes facilitates in
A : Increasing the field of view
B : Bringing three-dimensional view
C : Developing the concept of distance/ size
Then the correct option is/are
A : Increasing the field of view
B : Bringing three-dimensional view
C : Developing the concept of distance/ size
Then the correct option is/are
✅ Correct Answer: (D)
A, B and C
Q. The black opening between the aqueous humour and the lens is called
✅ Correct Answer: (D)
pupil
Q. Near and far points of a young person normal eye respectively are
✅ Correct Answer: (C)
25 cm and infinity
Q. The defect of vision in which the person is able to see distant object distinctly but cannot see nearby objects clearly is called
✅ Correct Answer: (D)
All above
Q. The ability of eye lens to adjust its focal length to form a sharp image of the object at varying distances on the retina is called
✅ Correct Answer: (C)
Power of accommodation of the eye
Q. Myopia and hypermetropia can be corrected by
✅ Correct Answer: (B)
Concave and convex lens
Q. The splitting of white light into its component colours is called
✅ Correct Answer: (C)
dispersion
Q. Which of the following phenomena of light are involved in the formation of a rainbow?
✅ Correct Answer: (C)
Refraction, dispersion and internal reflection
Q. Twinkling of stars is due to atmospheric
✅ Correct Answer: (B)
refraction of light by different layers of varying refractive indices
Q. The clear sky appears blue because
✅ Correct Answer: (C)
violet and blue lights get scattered more than lights of all other colours by the atmosphere.
Q. Which of the following statements is correct regarding the propagation of light of different colours of white light in air?
✅ Correct Answer: (C)
All the colours of the white light move with the same speed.
Q. The danger signals installed at the top of tall buildings are red in colour. These can be easily seen from a distance because among all other colours, the red light
✅ Correct Answer: (B)
is scattered the least by smoke or fog.
Q. Which of the following phenomena contributes significantly to the reddish appearance of the sun at sunrise or sunset?
✅ Correct Answer: (B)
Scattering of light
Q. When a person is myopic, he/ she can clearly see
✅ Correct Answer: (B)
Only nearby objects
Q. The image formed on the retina of the human eye is
✅ Correct Answer: (B)
real and inverted
Q. The colour that is scattered the least by the tiny particles and the atoms/ molecules of the atmosphere is
✅ Correct Answer: (D)
Red
Q. The human eye can focus objects at different distances by adjusting the focal length of the eye lens. This is due to
✅ Correct Answer: (B)
Accommodation
Q. The focal length of the eye lens increases when eye muscles.
✅ Correct Answer: (A)
are relaxed and lens becomes thinner
Q. The least distance of distinct vision for an eye lens is caused by the action of the
✅ Correct Answer: (C)
25 cm
Q. The air layer of atmosphere whose temperature is less then the hot layer behave as optically
✅ Correct Answer: (A)
denser medium
Q. The defect of long-sightedness is cured by
✅ Correct Answer: (B)
convex lens of definite focal length
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