MCQ Questions | Class 10 Science Chapter 11

MCQ Questions | Class 10 Science Chapter 11 | Human Eye and Colourful World with Answers 

MCQ Questions for Class10 Science Chapter 11 Human Eye and Colourful World

MCQ | Class 10 Science Chapter 11 | Human Eye and Colourful World Set B

Check the below NCERT MCQ Questions for Class 10 Science Chapter 11 Human Eye and Colourful World with Answers Pdf free download. MCQ Questions for Class 10 Science with Answers were prepared based on the latest exam pattern. We have Provided Human Eye and Colourful World Class 10 Science MCQs Questions with Answers to help students understand the concept very well.

Objective Question | Science Class 10 Chapter 11

NCERT Solutions Class 10 Science
Book: National Council of Educational Research and Training (NCERT)
Board: Central Board of Secondary Education (CBSE)
Class: 10th
Subject: Science
Chapter: 11
Chapters Name: Human Eye and Colourful World
Medium: English

Class 10th Science Book | Objective Type Questions


You can refer to NCERT Solutions for Class 10 Science Chapter 11 Human Eye and Colourful World to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.
Human Eye and Colourful World | Class 10 Science | NCERT Solutions
Q1. Assertion: Concave mirrors are used as reflectors in torches, vehicle head-lights and in search lights.
Reason: When an object is placed beyond the centre of curvature of a concave mirror, the image formed is real and inverted.
A. Both A and R are true and R is the correct explanation of A.
B. Both A and R are true but R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Ans: Both A and R are true but R is not the correct explanation of A.
Q2. Assertion: The near-point of a hypermetropic eye is more than 25 cm away.
Reason: Hypermetropia is corrected using spectacles containing concave lenses.
A. Both A and R are true and R is the correct explanation of A.
B. Both A and R are true but R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Ans: A is true but R is false.
Q3. Which of the following is a natural phenomenon which is caused by the dispersion of sunlight in the sky?
A. Twinkling of stars
B. Stars seem higher than they actually are
C. Advanced sunrise and delayed sunset
D. Rainbow
Ans: Rainbow
Q4. The medical condition in which the lens of the eye of a person becomes progressively cloudy resulting in blurred vision is called
A. myopia
B. hypermetropia
C. presbyopia
D. cataract
Ans: cataract
Q5. The least distance of distinct vision for a normal eye is
A. infinity
B. 25 cm
C. 2.5 cm
D. 25 m
Ans: 25 cm
Q6. The defect of vision in which a person cannot see the distant objects clearly but can see nearby objects clearly is called
A. myopia
B. hypermetropia
C. presbyopia
D. bifocal eye
Ans: myopia
Q7. A person cannot see distinctly objects kept beyond 2 m. This defect can be corrected by using a lens of power
A. + 0.5 D
B. – 0.5 D
C. + 0.2 D
D. – 0.2 D
Ans: -0.5 D
Q8. Near and far points of a young person normal eye respectively are
A. 0 and infinity
B. 0 and 25 cm
C. 25 cm and infinity
D. 25 cm and 150 cm.
Ans: 25 cm and infinity
Q9. Twinkling of stars is due to atmospheric
A. dispersion of light by water droplets
B. refraction of light by different layers of varying refractive indices
C. scattering of light by dust particles
D. internal reflection of light by clouds.
Ans: refraction of light by different layers of varying refractive indices
Q10. 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
A. is scattered the most by smoke or fog
B. is scattered the least by smoke or fog
C. is absorbed the most by smoke or fog
D. moves fastest in air
Ans: is scattered the least by smoke or fog
Q11. When white light enters a prism, it gets split into its constituent colours. This is due to
A. different refractive index for different wavelength of each colour
B. each colours has same velocity in the prism.
C. prism material have high density.
D. Scattering of light
Ans: different refractive index for different wavelength of each colour
Q12. The change in focal length of an eye lens is caused by the action of the
A. Pupil
B. Retina
C. Cilliary muscles
D. Iris
Ans: Cilliary muscles
Q13. The human eye forms the image of an object at its
A. Cornea
B. Iris
C. Pupil
D. Retina
Ans: Retina
Q14. The least distance of distinct vision for an eye lens is caused by the action of the
A. 25 m
B. 2.5 cm
C. 25 cm
D. 2.5 m
Ans: 25 cm
Q15. The human eye can focus objects at different distances by adjusting the focal length of the eye lens. This is due to
A. Presbyopia
B. Accommodation
C. Near-sightedness
D. Far-sightedness
Ans: Accommodation
Q16. Bi-focal lens are required to correct
A. astigmatism
B. coma
C. myopia
D. presbyopia
Ans: presbyopia
Q17. 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
A. Power of observation of the eye
B. Power of adjustment of the eye
C. Power of accommodation of the eye
D. Power of enabling of the eye
Ans: Power of accommodation of the eye
Q18. Myopia and hypermetropia can be corrected by
A. Concave and plano-convex lens
B. Concave and convex lens
C. Convex and concave lens
D. Plano-concave lens for both defects.
Ans: Concave and convex lens
Q19. The muscular diaphragm that controls the size of the pupil is
A. cornea
B. ciliary muscles
C. iris
D. retina
Ans: iris
Q20. The black opening between the aqueous humour and the lens is called
A. retina
B. iris
C. cornea
D. pupil
Ans: pupil

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