WorksheetsLight and Optics Quiz
Total questions: 19
Worksheet time: 10mins
What can you observe through the aligned holes of the boards in Diagram (a)?
Only the boards are visible
Bright candlelight passing through
A mixture of colors
A shadow formed
When the middle board is misaligned , what do you mainly observe?
The candle flame
A clear pathway of light
Only a dark spot where the light should be
A blurry image of the flame
Which principle explains the situation showed previously ?
Light diffuses after hitting surfaces
Light moves in curved paths around obstacles
Light travels in straight lines and is blocked by opaque materials
Light speeds up when blocked
What is the process when a mirror bounces light back?
Absorption
Transmission
Reflection
Refraction
A material that blocks all light is known as:
Transparent
Opaque
Translucent
Refracted
What do we call materials like glass that allow light to pass straight through?
Translucent
Opaque
Transparent
Reflective
A frosted window that blurs light is an example of which type of material?
Opaque
Transparent
Translucent
Refracted
When light passes from air into water, what happens to its path?
Bends away from the normal
Travels without changing speed
Bends toward the normal due to slowing down
Speeds up and keeps moving straight
Why must the archerfish adjust its spit to hit its prey above water?
Water resists the force
Light bends at the water surface, shifting the insect’s position
Fish cannot see clearly above water
Insects move too fast for the fish
The brighter primary rainbow forms because:
Light refracts twice
Light reflects once inside the raindrop and exits
Light passes through without changing direction
Light is absorbed by water
How does the secondary, fainter rainbow form?
Light reflects twice inside water droplets
No refraction occurs
Single quick reflection
Light absorption by air molecules
At the top of a prism spectrum, which color is visible?
Violet
Green
Red
Blue
What is the correct order of colors when white light passes through a prism?
Red, Yellow, Green, Blue, Violet
Red, Orange, Yellow, Green, Blue, Indigo, Violet
Violet, Indigo, Red, Orange, Yellow
Blue, Green, Yellow, Orange, Red
Contact lenses help correct vision by:
Preventing UV rays from entering the eyes
Focusing light properly onto the retina
Increasing eye size
Speeding up eye reflexes
People with poor eyesight usually experience blurred images because:
Their corneas reflect too much light
Light rays do not focus properly on the retina
Pupils are too large
Eyes absorb too much light
What environmental disadvantage is caused by contact lens disposal?
Noise pollution
Plastic waste polluting waterways
Increased recycling rates
Better drinking water quality
How has wearing contact lenses influenced youth culture?
Decreasing interest in fashion
Becoming a trendy lifestyle choice
Increasing traditional eyewear sales
Discouraging grooming habits
What is a major economic effect of contact lenses today?
Only available for luxury buyers
Inaccessible for most people
Affordable and widely used
Only sold in hospitals
According to MLA format, what comes first when citing a Youtube video?
Video URL
Video title
Name of uploader
Upload date
