Related Questions

Pharmacists recently conducted a study with respect to the reasons their customers purchased eye drops to soothe eye dryness. Dry eyes were more frequently experienced by customers who wore contact lenses than by custorners who did not wear contact lenses. The pharmacists concluded that wearing contact lenses, by itself, can cause contact wearers to have dry eyes.
A An inherited condition can cause both weak eyesight and dry eyes
B Physical exertion causes dry eyes in many people who wear contact lenses.
C Most people who have dry eyes do not wear contact lenses.
D Most people who wear contact lenses do not have dry eyes.
Worn out by a long walk, she painted. Here 'worn out' is a-
A dangling participle
B present participle
C adjective complemen
D adverb
Contact lenses are made from
A Teflon
B Polyvinyl chloride
C polystyrene
D Lucite
Contact lenses for eyes are made of perspex, which is nothing but
A Polymethylmethacrylate
B Polystyrene
C Unsaturated polyester
D Polypropylene
Papia has 16 marbles in her pocket. She has 8 red ones, 4 green ones, and 4 blue ones. What is the minimum number of marbles she must take out of her pocket to ensure that she has one of each color?
A 4
B 8
C 12
D 13
Bees have compound eyes - almost 6000 tiny lenses.
A made of
B made in
C made on
D made up
The computer has dramatically affected — photographic lenses are constructed.
A is the way
B that the way
C which way
D the way
Which of the following cannot be used for making lenses?
A Plastic
B Soil
C Glass
D Water
Plexiglass (also called lucite) because of its high optical transparency is used for making lenses. It is chemically
A Polymethyl methacrylate (PMMA)
B Polytetraflouroethylene(PTFE)
C Polycarbonates
D Phenolic resins
If points P and X are just meeting at the point of contact between the dials , and if dial 2 spins at exactly double the speed of dial 1, which of the following pairs of contact ?
A N and Y
B N and Z
C O and X
D O and Z

Next steps