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Question

The rear of buses and trucks are provided with double wheels (tyres) or even more. This is provided in order to:


Your Answer
A
Increase pressure on ground
Your Answer
B
Decrease pressure on ground
Your Answer
C
Reduce friction
Correct Answer
D
Increase friction for efficient braking

Solution

The correct option is B Increase friction for efficient braking
The additional tyres or wheels at the back is used for better handling and efficient braking. The larger area of tyres provides more friction from the ground and therefore makes braking smoother. 

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