Class 10 Light Reflection and Refraction MCQ

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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

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