Q. Approximately, how many minutes do we spend everyday being blind, considering the time taken for blinking?
✅ Correct Answer: (A)
30 min
Explanation:
On average, a person blinks about 15–20 times per minute.
Each blink lasts approximately 0.1 to 0.4 seconds.
Let's calculate based on a modest average:
So, we spend roughly 30 minutes per day effectively “blind” due to blinking.
15 blinks/min × 0.3 sec/blink = 4.5 sec/min
In an hour (60 min): 4.5 × 60 = 270 seconds = 4.5 minutes
In 24 hours: 4.5 × 24 = 108 minutes
But we don’t blink during sleep, so we calculate for about 12 waking hours:
4.5 × 12 = 54 seconds/min = approx. **30 minutes/day**
Explanation by: Mr. Dubey
On average, a person blinks about 15–20 times per minute.
Each blink lasts approximately 0.1 to 0.4 seconds.
Let's calculate based on a modest average:
So, we spend roughly 30 minutes per day effectively “blind” due to blinking.
15 blinks/min × 0.3 sec/blink = 4.5 sec/min
In an hour (60 min): 4.5 × 60 = 270 seconds = 4.5 minutes
In 24 hours: 4.5 × 24 = 108 minutes
But we don’t blink during sleep, so we calculate for about 12 waking hours:
4.5 × 12 = 54 seconds/min = approx. **30 minutes/day**