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mcq of Light Class 10. We covered all the mcq of Light Class 10 in this post for free so that you can practice well for the exam.
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Light Mock test for Class 10 Students
Which part of the eye, being the middle vascular layer, absorbs Light to reduce reflection within the eye chamber?
(a) choroid
(b) sclera
(c) retina
(d) cornea
Option a – choroid
What is the correct formula for calculating the refractive index of a material?
(a) speed of Light in vacuum / speed of Light in the medium
(b) speed of Light in water / speed of Light in the medium
(c) speed of Light in the medium / speed of Light in air
(d) All of these
Option a – speed of light in vacuum / speed of light in the medium
The eye lens directs light rays in such a way that they form a real, inverted, and minimized image on which part?
(a) converges, retina
(b) diverges, retina
(c) converges, the pupil
(d) diverges, pupil
Option a – converges, retina
Approximately how many light-sensitive cells are present on the surface of the retina?
(a) rods only
(b) cones only
(c) rods and cones
(d) neither rods nor cones
Option c – rods and cones
When looking at objects nearby, how do ciliary muscles affect the lens and its focal length?
(a) contract, increase
(b) contract, decrease
(c) expand, increase
(d) expand, decrease
Option a – contract, increase
A spherical mirror with a negative focal length is identified as which type?
(a) a Concave mirror
(b) a Convex mirror
(c) a Plane mirror
(d) None of these
Option a – a Concave mirror
If a student sitting far from the blackboard can read from it but not from his textbook, what does it suggest about his vision?
(a) The near point of his eyes has receded away
(b) The near point of his eyes has come closer to him
(c) The far point of his eyes has come closer to him
(d) The far point of his eyes has receded away
Option a – The near point of his eyes has receded away
A person unable to see objects beyond two meters needs corrective lenses of which power?
(a) +0.5 D
(b) -0.5 D
(c) +0.2 D
(d) -0.2 D
Option a – +0.5 D
In devices like torches and vehicle headlights, where is the bulb positioned for maximum light output?
(a) between the pole and the focus of the reflector
(b) very near to the focus of the reflector
(c) between the focus and centre of curvature of the reflector
(d) at the centre of curvature of the reflector
Option b – very near to the focus of the reflector
What kind of image does a convex lens create when the object is at 2F?
(a) at 2F
(b) same size
(c) real and inverted
(d) All of these
Option c – real and inverted
When an object is placed between F and 2F of a convex lens, what kind of image is produced?
(a) beyond 2F
(b) enlarged
(c) real and inverted
(d) All of these
Option c – real and inverted
Why does a swimming pool appear shallower than its actual depth when viewed from above?
(a) refraction of light
(b) reflection of light
(c) dispersion of light
(d) None of these
Option a – refraction of light
When the angle of deviation is at its minimum, the refracted ray through a prism does what?
(a) parallel to the Base of the prism
(b) perpendicular to the Base of the prism
(c) inclined at 45° w.r.t. Base of the prism
(d) None of these
Option a – parallel to the Base of the prism
If the distance between a spherical lens and the image formed is -15 cm, what can be inferred about the lens?
(a) concave lens
(b) convex lens
(c) either of the two irrespective of the object distance
(d) either the concave lens or the convex lens with the object between O and F
Option d – either the concave lens or the convex lens with the object between O and F
Which combination of light phenomena leads to the formation of a rainbow?
(a) Reflection, refraction and dispersion
(b) Refraction, dispersion and total internal reflection
(c) Refraction, dispersion and internal reflection
(d) Dispersion, scattering and total internal reflection
Option c – Refraction, dispersion and internal reflection
Which statement about vision is accurate?
(a) A person with myopia can see distant objects clearly
(b) A person with hypermetropia can see nearby objects clearly
(c) A person with myopia can see nearby objects clearly
(d) A person with hypermetropia cannot see distant objects clearly
Option c – A person with myopia can see nearby objects clearly
What happens to a ray of light moving from a denser to a rarer medium?
(a) It will bend towards the normal after refraction
(b) It will bend away from the normal after refraction
(c) It will continue to go on the same path after refraction
(d) It will refract making an angle of refraction equal to angle of incidence
Option b – It will bend away from the normal after refraction
How does light of different colors travel through air?
(a) Red light moves the fastest
(b) Blue light moves faster than green light
(c) All the colours of the white light move with the same speed
(d) Yellow light moves with the mean speed as that of red and the violet light
Option c – All the colours of the white light move with the same speed
What is the magnification value of a rearview mirror in vehicles?
(a) is less than one
(b) is more than one
(c) is equal to one
(d) can be more than or less than one depending upon the position of the object in front of it
Option a – is less than one
Where does the image of an object placed at the focus of a convex mirror form?
(a) Behind the mirror
(b) Diminished
(c) Virtual and erect
(d) All of these
Option d – All of these
When light enters from a denser to a rarer medium, how does it behave?
(a) goes undeviated
(b) bends away from the normal
(c) bends towards the normal
(d) None of these
Option b – bends away from the normal
A child sees her head enlarged, torso normal, and legs smaller in a magic mirror. What could be the order of mirror types from top to bottom?
(a) Plane, convex and concave
(b) Convex, concave and plane
(c) Concave, plane and convex
(d) Convex, plane and concave
Option c – Concave, plane and convex
What kind of image does a concave mirror produce when the object is placed at infinity?
(a) at Focus
(b) highly diminished
(c) real and inverted
(d) All of these
Option d – All of these
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