Physics of vision (AQA A-Level Physics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
How many light-detecting cells does the human eye contain?
How many light-detecting cells does the human eye contain?
130 million
What is the pupil diameter in bright light conditions?
What is the pupil diameter in bright light conditions?
1.5 mm
Approximately how much of the eye's total refraction occurs at the air-cornea boundary?
Approximately how much of the eye's total refraction occurs at the air-cornea boundary?
60%
What photopigment do rod cells contain?
What photopigment do rod cells contain?
Rhodopsin
What is the peak sensitivity wavelength range for 'green' cones?
What is the peak sensitivity wavelength range for 'green' cones?
530-550 nm
What is the cone cell density in the fovea?
What is the cone cell density in the fovea?
Over 150,000 per mm²
How long does full dark adaptation take?
How long does full dark adaptation take?
Approximately 30 minutes
By what factor can rod sensitivity increase when fully dark-adapted?
By what factor can rod sensitivity increase when fully dark-adapted?
Up to 100,000 times
What wavelength range can the human eye detect?
What wavelength range can the human eye detect?
Approximately 380 nm to 750 nm