Consider the following actions : 1. Detection of car crash/collision which results in the deployment, of airbags almost instantaneously 2. Detection of accidental free fall of a laptop towards the ground which results in the immediate turning off of the h

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Q: 84 (IAS/2023)
Consider the following actions :
1. Detection of car crash/collision which results in the deployment, of airbags almost instantaneously
2. Detection of accidental free fall of a laptop towards the ground which results in the immediate turning off of the hard drive
3. Detection of the tilt of the smart phone which results in the rotation of display between portrait and landscape mode
In how many of the above actions is the function of accelerometer required?

question_subject: 

Science

question_exam: 

IAS

stats: 

0,12,6,2,4,12,0

Option 1: This includes the detection of a car crash where an accelerometer can sense the rapid deceleration and trigger the deployment of airbags. So it requires the function of accelerometer.

Option 2: In this case, an accelerometer can detect the sudden change in position of a laptop when it`s falling. This triggers an action to shut off the hard drive to prevent data loss or hardware damage. So it requires the function of accelerometer.

Option 3: An accelerometer in a smartphone measures the tilt and motion. This helps in rotating the display from portrait to landscape mode (and vice versa) depending upon the orientation of phone. So it requires the function of accelerometer.

The incorrect options are Option 1 (Only one), Option 2 (Only two), and Option 4 (None) as all three scenarios do require accelerometer.

Therefore, the correct answer is Option 3 (All three).