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Class 10 Light Reflection and Refraction mcq. We covered all the Class 10 Light Reflection and Refraction mcq in this post for free so that you can practice well for the exam.
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mcq on Light Reflection and Refraction for Class 10 Students
Which structure in the eye regulates the pupil’s size through muscle control?
(a) Cornea
(b) Ciliary muscles
(c) Iris
(d) Retina
Option c – Iris
What benefits do humans gain from having two eyes?
(a) Wider field of vision
(b) Perception of depth
(c) Estimation of distance and size
(d) All of the above
Option d – All of the above
What is the name of the dark central opening between the aqueous humor and the eye lens?
(a) Retina
(b) Iris
(c) Cornea
(d) Pupil
Option d – Pupil
For a young person with normal vision, what are the near and far points of the eye?
(a) 0 and infinity
(b) 0 and 25 cm
(c) 25 cm and infinity
(d) 25 cm and 150 cm
Option c – 25 cm and infinity
What is the name of the visual defect where nearby objects appear blurred while distant objects are clear?
(a) Long-sightedness
(b) Far-sightedness
(c) Hypermetropia
(d) All of the above
Option d – All of the above
What is the eye’s ability to change the focal length of its lens to focus on objects at varying distances?
(a) Eye’s observation power
(b) Eye’s adjustment power
(c) Eye’s accommodation power
(d) Eye’s enabling power
Option c – Eye’s accommodation power
Which type of mirror always shows an upright image, regardless of distance?
(a) Either plane or convex
(b) Plane only
(c) Concave
(d) Convex only
Option a – Either plane or convex
What material is used to manufacture contact lenses?
(a) Polyvinyl chloride
(b) Polystyrene
(c) Lucite
(d) Teflon
Option c – Lucite
A person with long-sightedness, caused by a shorter eyeball, can only see
(a) Distant objects clearly and needs a convex lens
(b) Distant objects clearly and needs a concave lens
(c) Near objects clearly and needs a convex lens
(d) Near objects clearly and needs a concave lens
Option a – Distant objects clearly and needs a convex lens
When a Light ray passes into a glass block, which property remains unchanged?
(a) Only frequency changes
(b) Both frequency and speed change
(c) Frequency stays the same
(d) Frequency and wavelength change
Option c – Frequency stays the same
A person who can’t read a newspaper without glasses likely has
(a) Myopia
(b) Presbyopia
(c) Astigmatism
(d) Hypermetropia
Option d – Hypermetropia
When white Light enters a prism and splits into various colours, what causes this?
(a) Varying refractive indices for different wavelengths
(b) Equal velocity of all colours inside the prism
(c) High density of the prism material
(d) Light scattering
Option a – Varying refractive indices for different wavelengths
In the Atmosphere, a cooler air layer acts as which type of medium optically?
(a) Denser medium
(b) Rarer medium
(c) Neutral medium
(d) Could be either denser or rarer
Option a – Denser medium
The bending of Light in the Earth’s Atmosphere due to air density differences is referred to as
(a) Atmospheric reflection
(b) Atmospheric dispersion
(c) Atmospheric scattering
(d) Atmospheric refraction
Option d – Atmospheric refraction
What is the term for the random redirection of Light by tiny particles in the air?
(a) Dispersion
(b) Scattering
(c) Interference
(d) Tyndall effect
Option b – Scattering
Why is it hard to see through fog?
(a) Fog has a high refractive index
(b) Light is fully reflected by water droplets
(c) Light gets absorbed
(d) Light is scattered by fog droplets
Option d – Light is scattered by fog droplets
What types of lenses correct myopia and hypermetropia?
(a) Concave and plano-convex lenses
(b) Concave and convex lenses
(c) Convex and concave lenses
(d) Plano-concave lenses for both
Option b – Concave and convex lenses
Which vision condition requires bifocal lenses for correction?
(a) Astigmatism
(b) Coma
(c) Myopia
(d) Presbyopia
Option d – Presbyopia
If a person’s eye has a near point of 0.5 m and a far point of 3 m, what are the necessary lens powers for (i) reading and (ii) distance vision?
(a) 0.5 D and +3 D
(b) +2 D and -⅓ D
(c) -2 D and +⅓ D
(d) 0.5 D and -3 D
Option b – +2 D and -⅓ D
What kind of image is created on the retina?
(a) Virtual and upright
(b) Real and upside down
(c) Real and upright
(d) Virtual and upside down
Option b – Real and upside down
Vehicle side mirrors often carry a warning like “objects in mirror are closer than they appear.” These mirrors are
(a) Plane
(b) Concave with large focal length
(c) Concave with short focal length
(d) Convex
Option d – Convex
What optical principle causes a mirage?
(a) Polarization
(b) Dispersion
(c) Diffraction
(d) Total internal reflection
Option d – Total internal reflection
Why does a blackboard appear black?
(a) It reflects all colours
(b) It reflects no colours
(c) It absorbs only black light
(d) It reflects only black light
Option a – It reflects all colours
Which colour of light has the longest wavelength?
(a) Violet
(b) Green
(c) Yellow
(d) Red
Option d – Red
If someone hears the echo of a bell 0.3 seconds after striking it, and sound travels at 340 m/s, how far is the reflecting surface?
(a) 102 m
(b) 11 m
(c) 51 m
(d) 30 m
Option c – 51 m
We covered all the Class 10 light reflection and refraction mcq above in this post for free so that you can practice well for the exam.
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