Online Test — Light — Reflection and Refraction
25 Questions • 15 min • Chapter MCQ
15:00
Question 1 of 25
The bouncing back of light from a surface is called:
Refraction
Reflection
Dispersion
Absorption
Explanation: Reflection is the bouncing back of light from a surface.
Question 2 of 25
The line drawn perpendicular to the surface at the point of incidence is the:
Incident ray
Reflected ray
Normal
Axis
Explanation: The normal is the perpendicular line at the point where the ray strikes.
Question 3 of 25
According to the first law of reflection, the angle of incidence equals the angle of:
Refraction
Reflection
Deviation
Dispersion
Explanation: The angle of incidence equals the angle of reflection.
Question 4 of 25
The image formed by a plane mirror is:
Real and inverted
Virtual and erect
Real and erect
Virtual and inverted
Explanation: A plane mirror forms a virtual, erect image.
Question 5 of 25
The left–right interchange in a plane mirror image is called:
Reflection
Lateral inversion
Refraction
Magnification
Explanation: Lateral inversion is the interchange of left and right in a mirror image.
Question 6 of 25
A mirror whose reflecting surface curves inward is a:
Plane mirror
Concave mirror
Convex mirror
Flat mirror
Explanation: A concave mirror curves inward (like the inside of a spoon).
Question 7 of 25
A concave mirror brings parallel rays of light together, so it is a ______ mirror.
Diverging
Converging
Plane
Flat
Explanation: A concave mirror converges parallel rays at its focus.
Question 8 of 25
The distance from the pole to the focus of a mirror is the:
Principal axis
Focal length
Centre of curvature
Normal
Explanation: The focal length is the distance from the pole to the focus.
Question 9 of 25
A convex mirror always forms an image that is:
Real and large
Virtual, erect, and diminished
Real and inverted
The same size
Explanation: A convex mirror always forms a virtual, erect, diminished image.
Question 10 of 25
A convex mirror is used as a vehicle rear-view mirror because it gives a:
Magnified image
Wide field of view
Real image
Inverted image
Explanation: Its diminished image provides a wide field of view of the traffic behind.
Question 11 of 25
The bending of light as it passes from one medium to another is called:
Reflection
Refraction
Dispersion
Diffraction
Explanation: Refraction is the bending of light passing from one medium into another.
Question 12 of 25
Refraction occurs because light travels at different ______ in different media.
Colours
Speeds
Weights
Sizes
Explanation: The change in the speed of light at the boundary causes refraction.
Question 13 of 25
When light passes from air into water, it bends:
Away from the normal
Toward the normal
Along the surface
Backward
Explanation: Going from rarer (air) to denser (water), light bends toward the normal.
Question 14 of 25
A pencil in a glass of water appears bent because of:
Reflection
Refraction
Magnetism
Friction
Explanation: Light from the submerged part bends (refracts), making the pencil look bent.
Question 15 of 25
A ray striking the boundary along the normal will:
Bend toward normal
Bend away from normal
Pass straight through
Reflect fully
Explanation: A ray along the normal passes straight through without bending.
Question 16 of 25
A lens that is thicker in the middle than at the edges is a:
Concave lens
Convex lens
Plane lens
Flat lens
Explanation: A convex lens is thicker in the middle than at the edges.
Question 17 of 25
A convex lens converges light, so it is a ______ lens.
Diverging
Converging
Plane
Flat
Explanation: A convex lens brings parallel rays together (converging lens).
Question 18 of 25
A concave lens always forms an image that is:
Real and large
Virtual, erect, and diminished
Real and inverted
The same size
Explanation: A concave lens always forms a virtual, erect, diminished image.
Question 19 of 25
A convex lens used to see a magnified image of a nearby object acts as a:
Camera
Magnifying glass
Mirror
Prism
Explanation: A convex lens forms a magnified erect virtual image when the object is close (magnifying glass).
Question 20 of 25
The lens present in the human eye is a:
Concave lens
Convex lens
Plane mirror
Prism
Explanation: The human eye contains a convex lens that focuses light on the retina.
Question 21 of 25
The splitting of white light into its component colours is called:
Reflection
Refraction
Dispersion
Absorption
Explanation: Dispersion is the splitting of white light into its colours by a prism.
Question 22 of 25
The band of seven colours formed is called the:
Rainbow only
Spectrum
Prism
Image
Explanation: The band of colours produced is called the spectrum (VIBGYOR).
Question 23 of 25
In the human eye, the image is formed on the:
Cornea
Pupil
Retina
Iris
Explanation: The convex lens focuses light to form the image on the retina.
Question 24 of 25
Short-sightedness (myopia) is corrected using a:
Convex lens
Concave lens
Plane mirror
Prism
Explanation: Myopia is corrected with a concave lens.
Question 25 of 25
Long-sightedness (hyperopia) is corrected using a:
Convex lens
Concave lens
Plane mirror
Prism
Explanation: Hyperopia is corrected with a convex lens.