Light
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Preview questions (no answers)
- 1.
The Moon is often referred to as a 'secondary source' because it depends on the _____ to appear bright.
A.Earth's atmosphere
B.Sun's light
C.Internal heat
D.Artificial satellites
- 2.
A light source like a long tube light, which has a significant size, is known as a/an _____ source.
A.Point
B.Extended
C.Tiny
D.Microscopic
- 3.
A very small source of light, like light coming through a pinhole, is called a _____ source.
A.Extended
B.Point
C.Natural
D.Broad
- 4.
The Earth is classified as a/an _____ body in space.
A.Luminous
B.Non-luminous
C.Artificial light
D.Primary
- 5.
Which of the following is a natural source of light often seen during a thunderstorm?
A.Street lights
B.Lightning
C.Fireworks
D.Searchlights
- 6.
When we see a tree, we are seeing light that was __________ by the tree.
A.Produced
B.Reflected
C.Absorbed
D.Created
- 7.
Which statement best defines an artificial source of light?
A.It is a source that exists in nature without human help
B.It is a source that is created by humans to produce light
C.It is any object that can reflect light well
D.It is a source that does not require any energy
- 8.
What is the 'Candela' a unit of, in relation to light sources?
A.Speed of light
B.Wavelength of light
C.Luminous intensity
D.Distance of a light source
- 9.
Which of these is a man-made source of light that does not require electricity to function at the moment of emission?
A.LED bulb
B.Neon tube
C.Burning matchstick
D.Television screen
- 10.
Which light source is most likely used in a lighthouse to ensure the beam remains concentrated and travels long distances?
A.A simple candle with a lens.
B.A powerful electric lamp combined with a Fresnel lens.
C.A large bonfire.
D.A series of phosphorescent stones.
Download the worksheet for Light - Sources of Light to practice offline. It includes additional chapter-level practice questions.
Rectilinear Propagation of Light
SubtopicRectilinear Propagation of Light under Light for Grade 6 ICSE.
Preview questions (no answers)
- 1.
If you move the screen further away from an object while the light source is fixed, what happens to the shadow?
A.It becomes smaller
B.It becomes larger
C.It stays the same
D.It turns white
- 2.
Shadows are formed during the day because:
A.Sunlight is very cold
B.Sunlight travels in straight lines and is blocked by us
C.The ground is luminous
D.The atmosphere reflects all light
- 3.
Which of these can be used as a screen for a shadow?
A.A wall
B.The ground
C.A sheet of paper
D.All of these
- 4.
Which of the following is NOT necessary for shadow formation?
A.A source of light
B.An opaque object
C.A magnifying lens
D.A screen
- 5.
In the diagram provided, three light rays and are emitted from source . While rays and reach the screen, ray is stopped by an opaque barrier. Which scientific principle explains why ray cannot bend around the barrier to reach the screen?
A.The principle of light reflection
B.The rectilinear propagation of light
C.The transparent nature of air
D.The conversion of light into heat
- 6.
A student sets up an experiment with three cardboards and as shown in the diagram. To observe the light from the source, the holes in the cardboards must be positioned in a specific way. This setup is a classic demonstration of which requirement for light to reach the eye?
A.The holes must be arranged in a zig-zag pattern
B.The holes must be at different vertical heights
C.The holes must be aligned along the same straight line
D.The holes must be wider than the light source
- 7.
A shadow is formed because light is:
A.Bouncing off the object
B.Passing through the object
C.Obstructed by the opaque object
D.Changing its color near the object
- 8.
If a light source is moved further away from an opaque object, the size of its shadow on a fixed screen will:
A.Increase
B.Decrease
C.Stay the same
D.Become sharper and larger
- 9.
If the Moon's orbit was perfectly aligned with the Earth's orbit around the Sun, how often would we see a solar eclipse?
A.Once a year
B.Every month
C.Every day
D.Every decade
- 10.
Why do we see a flash of lightning before we hear the thunder?
A.Lightning is closer than thunder
B.Sound travels much slower than light
C.Light can travel in a vacuum but sound cannot
D.The eyes are located ahead of the ears
Download the worksheet for Light - Rectilinear Propagation of Light to practice offline. It includes additional chapter-level practice questions.
Shadows and Eclipses
SubtopicShadows and Eclipses under Light for Grade 6 ICSE.
Preview questions (no answers)
- 1.
The darkest part of a shadow is where ________ light from the source reaches.
A.All
B.Some
C.No
D.Half the
- 2.
During a solar eclipse, the ________ casts its shadow on the ________.
A.Earth, Moon
B.Moon, Earth
C.Sun, Earth
D.Sun, Moon
- 3.
Which of these objects will produce a faint or light shadow?
A.A brick
B.A frosted glass window
C.A wooden chair
D.An iron box
- 4.
The distance between the object and the source of light is doubled. The size of the shadow on a fixed screen will:
A.Increase
B.Decrease
C.Stay the same
D.Become zero
- 5.
What happens to the size of the shadow of a stick as the Sun rises from the East toward the zenith (overhead)?
A.Size increases
B.Size decreases
C.Size remains same
D.Shadow disappears
- 6.
Which of the following will not form a shadow?
A.A bird flying high in the sky in bright sunlight
B.A piece of clear cellophane paper
C.A person standing in the dark
D.A wooden chair in a room with a bulb
- 7.
The image in a pinhole camera is real because:
A.It is inverted
B.It can be obtained on a screen
C.It is colorful
D.It is formed by reflection
- 8.
Which phenomenon proves that light travels much faster than sound?
A.Shadow formation
B.Solar eclipse
C.Thunder being heard after seeing lightning
D.Image formation in a pinhole camera
- 9.
In an extended source of light, if the source is moved closer to the object:
A.The penumbra becomes smaller
B.The penumbra becomes larger
C.The umbra becomes smaller
D.The umbra remains unchanged
- 10.
A pinhole camera works on the principle that light:
A.Bends around corners
B.Travels in a straight line
C.Is a form of transverse wave
D.Can be reflected by a screen
Download the worksheet for Light - Shadows and Eclipses to practice offline. It includes additional chapter-level practice questions.
Preview questions (no answers)
- 1.
Which of the following gives us a sensation of sight?
A.Sound
B.Heat
C.Light
D.Magnetism
- 2.
Light can pass through which of the following?
A.A brick
B.Clear glass
C.A metal sheet
D.A stone wall
- 3.
What is the nature of the image formed in a plane mirror?
A.Erect and virtual
B.Inverted and real
C.Erect and real
D.Inverted and virtual
- 4.
Oily paper is an example of:
A.Transparent material
B.Translucent material
C.Opaque material
D.Luminous material
- 5.
An object is placed in the space between two plane mirrors that are fixed at an angle of to each other. How many images of the object will be formed as a result of multiple reflections?
A.2 images
B.4 images
C.3 images
D.Infinite images
- 6.
A ray of light is reflected from a plane mirror. If the total angle between the incident ray and the reflected ray is , calculate the angle between the incident ray and the mirror surface.
A.B.C.D. - 7.
If the angle of incidence is , what is the total angle between the incident ray and the reflected ray?
A.B.C.D. - 8.
An incident ray makes an angle of with the mirror. The angle of reflection is also only if:
A.B.C.D.This is always true regardless of .
- 9.
Which of the following is a characteristic of the image formed by a plane mirror?
A.The image is diminished in size.
B.The image is real and inverted.
C.The image undergoes lateral inversion.
D.The image is formed on the surface of the mirror.
- 10.
Two plane mirrors are kept at an angle of . How many images are formed of an object kept symmetrically between them?
A.5
B.4
C.6
D.3
Download the worksheet for Light - Reflection of Light to practice offline. It includes additional chapter-level practice questions.