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ICSE Class 10 Answered

Everyone blinks. The lids move to close the eyes for a ii moment and move back to open them. If the radius of the eyeball is about 1 cm and the eyelids move about double of the radius of the eyeball. Estimate the speed with which we blink our eyes, if the time for 50 blinks is 16% seconds.
Asked by farzana999 | 10 Feb, 2024, 21:39: PM
answered-by-expert Expert Answer

50 blinks in 16 secs . Hence time for 1 blink = 16/50 = 0.32 s

If the radius of eye ball is 1 cm and eye lid mones a distance double the radius,

then distance moved by eyelid is 2 cm

speed of eye lid while blinking = distance / time = 2 cm / 0.32 s = 6.25 cm/s

Answered by Thiyagarajan K | 12 Feb, 2024, 13:45: PM
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