Sunglasses Quiz
Questions: 16 · 10 minutes
1. Photochromic lenses darken outdoors but remain lighter than expected inside a car. What is the most likely explanation?
Polarized dashboards reverse the photochromic effect
Photochromic lenses respond only to glare reflected from water
Moving air prevents the lenses from changing color
The windshield filters much of the UV that activates many photochromic lenses
2. Which common lens material is especially known for high impact resistance and is often chosen for sports or children’s eyewear?
Standard CR-39 plastic
Crown glass
Polycarbonate
Decorative acrylic
3. Which observation best suggests that a pair of sunglasses fits properly?
The temples press firmly enough to leave marks
The frame rests on the cheeks whenever you smile
The frame stays stable without pinching, and the lenses sit comfortably before the eyes
The lenses sit far enough away that peripheral coverage is minimal
4. What does a mirrored lens coating primarily do?
It guarantees that the lens is polarized
It makes the lens impossible to scratch
It reflects some visible light, but does not by itself verify UV protection
It allows the lens to change tint according to temperature
5. What does a gradient tint describe?
A lens that is darker in one area, commonly the top, and lighter in another
A coating that guarantees complete UV protection
A lens that changes prescription strength from top to bottom
A polarized layer that becomes mirrored in bright light
6. What is the main purpose of polarization in sunglasses?
To make the lenses resistant to all scratches
To reduce reflected glare from surfaces such as water and roads
To block more UV than any non-polarized lens
To make lenses automatically darken outdoors
7. Why can sunglasses still be useful on a bright but cloudy day?
Clouds convert UV radiation into visible glare
UV radiation can still reach the eyes through cloud cover
Clouds eliminate visible light but intensify infrared radiation
Tinted lenses sharpen vision in every type of cloud cover
8. Which label most directly indicates that sunglasses are designed to block both UVA and UVB radiation?
UV400 or 100% UVA and UVB protection
Polarized lenses
Category 3 tint
Mirrored finish
9. After a windy beach visit, you can see fine sand and salt on your sunglasses. What should you do before wiping the lenses?
Brush the particles off with your fingertips
Rub the lenses gently with a dry microfiber cloth
Rinse away loose particles with clean water
Breathe on the lenses until the salt dissolves
10. Your lenses have fingerprints but no visible sand or grit. What is the most suitable cleaning method?
Polish them with a clean cotton shirt
Use lens-safe cleaner and a clean microfiber cloth
Wipe them with a dry paper towel
Use household glass cleaner and tissues
11. A driver wants a lens tint that generally keeps traffic-signal and object colors looking relatively natural. Which tint is the most suitable choice?
Deep red
Bright yellow
Strong blue
Neutral gray
12. A frame begins pressing painfully behind your ears after about 20 minutes. What is the most appropriate response?
Keep wearing it until the frame loosens naturally
Have the temple fit adjusted or choose a better-fitting frame
Replace the lenses with a darker tint
Add a second nose pad to shift all pressure forward
13. Why do children also benefit from sunglasses with verified UV protection?
UV protection is needed only until the eyes reach adult size
Children cannot naturally narrow their pupils in sunlight
Dark lenses permanently improve developing eyesight
Their eyes require protection from UV exposure just as adults’ eyes do
14. What can you correctly conclude from a label that says only “polarized”?
The lenses block 100% of UVA and UVB radiation
The lenses are suitable for every low-light activity
They are made from impact-resistant polycarbonate
They reduce certain reflected glare, but UV protection should be verified separately
15. You frequently place sunglasses loose in a bag with keys. Which change would best help prevent scratches and frame damage?
Keep them in a protective case, ideally after cleaning the lenses
Wrap them in a paper tissue before placing them in the bag
Leave one temple arm open to reduce pressure on the hinges
Store them with the lenses facing downward so the frame stays level
16. Someone will spend several hours near snow or open water, where light can arrive from the front and sides. Which frame feature offers the most useful additional coverage?
A close-fitting wraparound shape or side coverage
Small round lenses
Clear lower lens sections
A thin metal bridge